C=C[C@@]1(C)C[C@@H](O)C2=C(C(=O)[C@@]3(O)OC[C@@]24CCCC(C)(C)[C@@]43O)[C@H]1OC	(1R,3R,5R,6S,10R)-5-ethenyl-3,9,10-trihydroxy-6-methoxy-5,11,11-trimethyl-16-oxatetracyclo[7.5.2.01,10.02,7]hexadec-2(7)-en-8-one