The Profiler add-on was a standard part of AC 9. You create a fill representing a cross section o your molding, and then use the add-on to extrude this along a path.
The result will be flat on the ground. You then have to view just the molding in the 3D window and change your view type to an axo projection from the top of the molding and save the result as a GDL object. Place the object along your wall and drag it into place.
With Objective, you can do all of this without the extra steps ... and much more.
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AC 27 USA and earlier • macOS Ventura 13.6.6, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB