I am opening inventor right now to play with it. But if you just want the 2d profile you can use the text tool in autocad to write the text and then use command “txtexp” to explode the text into separate lines.
Edit: in inventor you just have to create a sketch, and use the text tool to choose your font, size, and write what you want. Then finish the sketch, and extrude the text a little bit. Then export as a dxf file.
Edit2: actually you have to export as a dwg file that can be opened by autocad. ultimately it is easier to just use autocad.