I need to draw a rather complex shape in my pdf document. An example is in the attached file

I use Syncfusion.Pdf.Net.Core in my app.
This library allows you to draw simple primitive shapes, but I have a few questions.
so my drawing consists of the following parts:
1.frame similar to ellips
2. "rectangle" with rounded corners and filling.
3. "shape" with filling. I don't know what to call it.
4. rectangle. I can draw it.
tell me - how to draw figures 1, 2, 3? any advice - I will be very grateful.