20485-02-3 7H,15H-Bisoxepino(3',4':4,5)pyrrolo(1,2-a:1',2'-d)pyrazine-7,15-dione, 5,13-bis(acetyloxy)-5,5a,7a,8,13,13a,15a,16-octahydro-7a,15a-bis(methylthio)-, (5S-(5alpha,5aalpha,7abeta,13alpha,15abeta))- LL-S 88beta