chemdraw alternatives

Hi, does anyone know of a (preferably free, doesn't have to be though) chemdraw replacement. After spending some time on the cheesy website trying to update from v11.0, I don't want to deal with them anymore. It's just so I can draw organic structures in exams and quizzes.

I spent some time searching but I couldn't find anything.
I would like it to be Universal Binary or Intel (I don't want to install rosetta).
Thanks.