Convert XAML Vector Graphic to PNG

<Canvas xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"><Canvas.Background>  <DrawingBrush><DrawingBrush.Drawing><DrawingGroup>
  <DrawingGroup x:Name="DrawingLayer">
    <DrawingGroup.ClipGeometry>
      <RectangleGeometry Rect="0,0,507.946,507.946" />
    </DrawingGroup.ClipGeometry>
    <GeometryDrawing x:Name="path51">
      <GeometryDrawing.Brush>
        <SolidColorBrush Color="#FFA4C9EE" Opacity="0.7" Transform="1.89511,0,0,1.91236,-231.458,-247.971" />
      </GeometryDrawing.Brush>
      <GeometryDrawing.Geometry>
        <PathGeometry FillRule="Nonzero" Transform="1.89511,0,0,1.91236,-231.458,-247.971" Figures="M134.757,263.776C134.757,330.515 189.055,384.816 255.796,384.816 322.535,384.816 376.835,330.515 376.835,263.776 376.835,197.035 322.535,142.737 255.796,142.737 189.055,142.737 134.757,197.035 134.757,263.776z" />
      </GeometryDrawing.Geometry>
    </GeometryDrawing>
    <GeometryDrawing x:Name="path56">
      <GeometryDrawing.Brush>
        <RadialGradientBrush Center="218.9404,219.7715" RadiusX="150.7063" RadiusY="150.7063" GradientOrigin="218.9404,219.7715" MappingMode="Absolute" Opacity="1" Transform="2.04451,0,0,2.04451,-264.353,-281.723">
          <GradientStop Color="#FF73FFFF" Offset="0" />
          <GradientStop Color="#FF2EA6B9" Offset="0.2809" />
          <GradientStop Color="#FF006B8B" Offset="1" />
        </RadialGradientBrush>
      </GeometryDrawing.Brush>
      <GeometryDrawing.Pen>
        <Pen Thickness="7.73106" StartLineCap="Flat" EndLineCap="Flat" LineJoin="Miter">
          <Pen.Brush>
            <SolidColorBrush Color="#FF1C6671" Opacity="0.988235" />
          </Pen.Brush>
        </Pen>
      </GeometryDrawing.Pen>
      <GeometryDrawing.Geometry>
        <PathGeometry FillRule="EvenOdd" Transform="2.04451,0,0,2.04451,-264.353,-281.723" Figures="M356.643,263.366C356.643,320.393 310.413,366.623 253.387,366.623 196.36,366.623 150.131,320.394 150.131,263.366 150.131,206.339 196.36,160.11 253.387,160.11 310.412,160.11 356.643,206.339 356.643,263.366z" />
      </GeometryDrawing.Geometry>
    </GeometryDrawing>
    <GeometryDrawing x:Name="path59">
      <GeometryDrawing.Brush>
        <SolidColorBrush Color="#FFFFFFFD" Opacity="0.7" Transform="1.39896,-1.41113,1.41113,1.39896,-469.673,250.645" />
      </GeometryDrawing.Brush>
      <GeometryDrawing.Pen>
        <Pen Thickness="4.99273" StartLineCap="Flat" EndLineCap="Flat" LineJoin="Miter">
          <Pen.Brush>
            <SolidColorBrush Color="#FF1C6772" Opacity="0.988235" />
          </Pen.Brush>
        </Pen>
      </GeometryDrawing.Pen>
      <GeometryDrawing.Geometry>
        <PathGeometry FillRule="Nonzero" Transform="1.39896,-1.41113,1.41113,1.39896,-469.673,250.645" Figures="M305.753,281.376C305.753,281.376 286.895,262.52 277.899,253.525 285.842,245.581 299.051,232.372 299.051,232.372 300.964,230.459 301.98,227.901 301.98,225.299 301.98,224.01 301.731,222.711 301.218,221.474 299.67,217.738 296.025,215.301 291.98,215.301L215.117,215.301C209.594,215.301,205.117,219.778,205.117,225.301L205.117,302.168C205.117,306.213 207.554,309.859 211.29,311.407 215.027,312.955 219.329,312.098 222.188,309.238 222.188,309.238 235.396,296.027 243.34,288.083 252.336,297.079 271.192,315.937 271.192,315.937 273.067,317.813 275.611,318.867 278.263,318.867 280.915,318.867 283.458,317.813 285.334,315.938L305.754,295.518C307.629,293.642 308.683,291.099 308.683,288.447 308.683,285.795 307.629,283.251 305.753,281.376z" />
      </GeometryDrawing.Geometry>
    </GeometryDrawing>
  </DrawingGroup>
      </DrawingGroup></DrawingBrush.Drawing></DrawingBrush></Canvas.Background></Canvas>