Sentence 1: Azaloxan ( CGS-7135A ) is a medication that was patented in the early 1980s by Ciba-Geigy as an antidepressant , but was never marketed .
Sentence 2: Azaloxan ( CGS-7135A ) is a drug which was marketed as an antidepressant by Ciba-Geigy in the early 1980s , but was never patented .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?