sentence1: Azaloxan ( CGS-7135A ) is a medication that was marketed by Ciba-Geigy as an antidepressant in the early 1980s , but was never patented .
sentence2: Azaloxan ( CGS-7135A ) is a medication that was patented in the early 1980s by Ciba-Geigy as an antidepressant , but was never marketed .