Synonyms: Ergotaman-3',6',18-trione,12'-hydroxy-2'-(1-methylethyl)-5'-(1-methylpropyl)-, [5'a(S)]-; b-Ergocryptine (8CI);8H-Oxazolo[3,2-a]pyrrolo[2,1-c]pyrazine, ergotaman-3',6',18-trione deriv.;Indolo[4,3-fg]quinoline, ergotaman-3',6',18-trione deriv.; b-Ergokryptine