1-((4,6-Dihydro-6-oxo-7-phenylthieno(2,3-a)indolizin-9-yl)carbonyl)-3-methoxyazetidine 141389-00-6 Azetidine, 1-((4,6-dihydro-6-oxo-7-phenylthieno(2,3-a)indolizin-9-yl)carbonyl)-3-methoxy-