emethallicin B

7aβ,14aβ-Epitetrathio-5,5aα,8,12,12aα,15-hexahydro-5α-[(R)-hydroxyphenylacetoxy]-12α-(phenylacetoxy)-7H,14H-oxepino[3'',4'':4',5']pyrrolo[1',2':4,5]pyrazino[1,2-a]indole-7,14-dione