ailanthone

13,21-Didehydrochaparrinone

11β,20-Epoxy-1β,11,12α-trihydroxypicrasa-3,13(21)-diene-2,16-dione

Picrasa-3,13(21)-diene-2,16-dione,11,20-epoxy-1,11,12-trihydroxy-, (1b,11b,12a)-