Calein D

Arucanolide

(3aS,4S,5R,6R,8Z,10R,11aR)-4-Acetoxy-2,3,3a,4,5,6,7,10,11,11a-decahydro-5-(2-methylacryloyloxy)-6-hydroxy-6,10-dimethyl-3-methylenecyclodeca[b]furan-2,7-dione

2-Methylpropenoic acid (3aS,4S,5R,6R,8Z,10R,11aR)-4-(acetyloxy)-2,3,3a,4,5,6,7,10,11,11a-decahydro-6-hydroxy-6,10-dimethyl-3-methylene-2,7-dioxocyclodeca[b]furan-5-yl ester