Cinema 4D users do not need to export OBJ files but instead import C4D files natively. However, in order to preserve complex geometry, you must allow the additional polygon data to be available by turning on the "Save Polygons For Melange
" checkbox from the Cinema 4D file Preferences. This will work as if you were importing an OBJ file, so it will not keep material settings or animations in tact. Requires Cinema 4D R12 or newer to import inside Element.
Make sure your object in C4D has a UVW tag in order for the texture coordinates to be imported correctly.
You can do this by going to the Object
manager/tags/Generate UVW Coordinates.