5-Benzoyl-5,6,7,8-tetrahydrocyclopenta(b)-1,3-dioxolo(4,5-f)indole 50332-15-5 BRN 1025795 Cyclopenta(b)-1,3-dioxolo(4,5-f)indole, 5,6,7,8-tetrahydro-5-benzoyl-