1915-67-9

(4R)-4-(3-Furyl)-1,4,4a,5,6,6aβ,7,8,9,10,11,12-dodecahydro-4aβ,7,9,9-tetramethyl-2,10,13-trioxo-7β,11β-methano-2H-cycloocta[f][2]benzopyran-8β-acetic acid methyl ester