How do i remove strings?

"\r\n\r\n    New message for 5522 Marbut Forest Way, Lithonia\r\n    \r\n        @media only screen and (min-width: 632px)\r\n        {\r\n            .containerClass\r\n            {\r\n              width : 600px !important;\r\n            }\r\n            .hidden\r\n            {\r\n              display: inline-block !important;\r\n            }\r\n            .photo_display\r\n            {\r\n              float: left !important;\r\n            }\r\n            .centerContainer\r\n            {\r\n              width: 490px !important;\r\n            }\r\n            .halfWidth {\r\n              width: 50% !important;\r\n            }\r\n        }\r\n    \r\n  \r\n  \r\n    \r\n\r\n  \r\n  \r\n    \r\n      \r\n  \r\n  \r\n    \r\n      \r\n          \r\n            \r\n            \r\n              \r\n              Submit Listings |\r\n              View Leads |\r\n              Answer Questions\r\n              \r\n            \r\n          \r\n      \r\n    \r\n  \r\n  \r\n  \r\n  \r\n  \r\n  \r\n\r\n    \r\n\r\n  \r\n  \r\n    \r\n      \r\n        \r\n          \r\n            \r\n              \r\n                \r\n                  \r\n                    Hi Leasing,\r\n                  \r\n                  \r\n                    A new renter is interested in your listing at 5522 Marbut Forest Way.\r\n                    Check out the details below.\r\n                  \r\n                \r\n              \r\n              \r\n                \r\n                \r\n                  \r\n                    \r\n                      From: Mario \r\n                    \r\n                  \r\n                  \r\n                    \r\n                      Email: jermariodorsey45@gmail.com*\r\n                    \r\n                  \r\n                                      \r\n                      \r\n                        Phone: (901) 618-3090\r\n                      \r\n                    \r\n                                    \r\n                    \r\n                      Message: I am interested in this rental and would like to schedule a viewing. Please let me know when this would be possible.\r\n                    \r\n                  \r\n                  \r\n  \r\n    \r\n  \r\n\r\n                  \r\n                                    \r\n  \r\n    \r\n  \r\n\r\n                  \r\n                    Please click Reply in your e-mail client to reply to the new renter.\r\n                  \r\n                  \r\n                    \r\n                      \r\n                        * This email address may be anonymized to protect the privacy of our users.\r\n                      \r\n                    \r\n                  \r\n                \r\n                \r\n              \r\n              \r\n                \r\n                  \r\n                    \r\n                      \r\n                        \r\n                          Your listing details:\r\n                        \r\n                      \r\n                    \r\n                  \r\n                  \r\n                    \r\n                      \r\n                        \r\n                                                      \r\n                                                  \r\n                      \r\n                      \r\n                        \r\n                          \r\n                            5522 Marbut Forest Way,\r\n                            Lithonia, GA\r\n                          \r\n                          $870/mo.\r\n                          3 br, 2 ba\r\n                          Single-Family Home\r\n                                                  \r\n                      \r\n                    \r\n                  \r\n                \r\n              \r\n            \r\n          \r\n        \r\n      \r\n    \r\n  \r\n  \r\n\r\n    \r\n        \r\n\r\n  \r\n    \r\n      \r\n        \r\n                \r\n          \r\n            This email was sent to leasing@altisourcerentals.com.\r\n          \r\n        \r\n                        \r\n          \r\n            Trulia, Inc. | 535 Mission Street, Suite 700, San Francisco, CA 94105\r\n          \r\n        \r\n      \r\n    \r\n  \r\n\r\n    \r\n  \r\n\r\n\r\n"

string body = item2.HTMLBody;

body = regex.Replace(body, String.Empty);
string body2 = "<html><body>" + body + "</body></html>";

Panel1.Controls.Add(new LiteralControl(body2));