Nsc 238185

Bruceolide

13,20-Epoxy-3,11β,12α,15β-tetrahydroxy-2,16-dioxopicras-3-en-21-oic acid methyl ester

Methyl (11beta,12alpha,15beta)-13,20-epoxy-3,11,12,15-tetrahydroxy-2,16-dioxopicras-3-en-21-oate

Picras-3-en-21-oic acid, 13,20-epoxy-3,11,12,15-tetrahydroxy-2,16-dioxo-, methyl ester, (11beta,12alpha,15beta)-