How to get columns names doesnt start from first row with OLEDB

ataTable dt = new DataTable();
                conString = string.Format(conString, filePath);

                using (OleDbConnection connExcel = new OleDbConnection(conString))
                {
                    using (OleDbCommand cmdExcel = new OleDbCommand())
                    {
                        using (OleDbDataAdapter odaExcel = new OleDbDataAdapter())
                        {
                            cmdExcel.Connection = connExcel;

                            //Get the name of First Sheet.
                            connExcel.Open();
                            DataTable dtExcelSchema;
                            dtExcelSchema = connExcel.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
                            string sheetName = dtExcelSchema.Rows[0]["TABLE_NAME"].ToString();
                            
                            connExcel.Close();

                            // TRY THIS BUT NOT WORKS
                            // string Range = 
                            //cmdExcel.CommandText = "SELECT * From [" + sheetName + "$B6:C10]";
                            //cmdExcel.CommandText = "SELECT * From [" + sheetName + Range +"]";
                            connExcel.Open();
                            cmdExcel.CommandText = "SELECT * From ["+ sheetName +"]"; 
                            
                            odaExcel.SelectCommand = cmdExcel;
                            odaExcel.Fill(dt);
                            connExcel.Close();
                        }
                    }
                }

                conString = ConfigurationManager.ConnectionStrings["Constring"].ConnectionString;
                using (SqlConnection con = new SqlConnection(conString))
                {
                    using (SqlBulkCopy sqlBulkCopy = new SqlBulkCopy(con))
                    {
                        //Set the database table name.
                        sqlBulkCopy.DestinationTableName = "dbo.Tipo_Adquisicion";

                        //[OPTIONAL]: Map the Excel columns with that of the database table
                        sqlBulkCopy.ColumnMappings.Add("CÓDIGO EMPRESA", "Tipo_Adquisicion");
                        sqlBulkCopy.ColumnMappings.Add("PERÍODO INFORMACIÓN", "descripcion");
                       // sqlBulkCopy.ColumnMappings.Add("Country", "Country");

                        con.Open();
                        sqlBulkCopy.WriteToServer(dt);
                        con.Close();
                    }
                }
            }