141137-59-9

(1'R,8R,8a'S)-1'-hydroxy-1',4,4,8',8',11'-hexamethyl-2',3',8a',9'-tetrahydro-1'H,4H,8'H,10'H-spiro[1,4-dioxepino[2,3-g]indole-8,7'-[5a,9a](epiminomethano)cyclopenta[f]indolizine]-9,10'(10H)-dione 4'-oxide