Synonyms: (Z)-2-Methyl-2-butenoic acid [(3aR,4aα,9aβ)-dodecahydro-2-oxo-3,5-bis(methylene)-8aβ-methyl-8β-hydroxynaphtho[2,3-b]furan]-4α-yl ester;(Z)-2-Methyl-2-butenoic acid [(3aR,4aα,9aβ)-dodecahydro-8β-hydroxy-8aβ-methyl-3,5-bis(methylene)-2-oxonaphtho[2,3-b]furan-4α-yl] ester;Chrysanin