crassolide

(1aS,2R,4E,6S,8E,11R,11aR,14aS,14bS)-2,6,11-Triacetoxy-2,3,6,7,10,11,11a,12,14a,14b-decahydro-1a,5,9-trimethyl-12-methyleneoxireno[13,14]cyclotetradeca[1,2-b]furan-13(1aH)-one