102694-32-6 CCRIS 3973 Perylo(1,2-b)oxirane-7,11-dione, 7a,8a,8b,8c-tetrahydro-1,6,8c-trihydroxy-, (7aalpha,8aalpha,8balpha,8calpha)-(+)- Perylo(1,2-b)oxirene-7,11-dione, 7a,8a,8b,8c-tetrahydro-1,6,8c-trihydroxy-, (7aR-(7aalpha,8aalpha,8bbeta,8calpha))- Stemphyltoxin III