((3aS,4R,6R,10S,11R,11aS)-10-hydroxy-6,10-dimethyl-3-methylidene-11-(2-methylpropanoyloxy)-2,5-dioxo-3a,4,6,7,8,9,11,11a-octahydrocyclodeca(b)furan-4-yl)2-methylpropanoate
((3as,4r,6r,10s,11r,11as)-10-hydroxy-6,10-dimethyl-3-methylidene-11-(2-methylpropanoyloxy)-2,5-dioxo-3a,4,6,7,8,9,11,11a-octahydrocyclodeca(b)furan-4-yl)2-methylpropanoate