glaucarubinone

2,16-Dioxo-11β,20-epoxypicrasa-3-ene-1β,11,12α,15β-tetrol 15-[(2S)-2-hydroxy-2-methylbutanoate]

11β,20-Epoxy-1β,11,12α-trihydroxy-15β-[(S)-2-hydroxy-2-methyl-1-oxobutoxy]picras-3-ene-2,16-dione