C=C(C)C[C@@H]1C[C@H](C)[C@H]2CC[C@](C)(NC=O)[C@@H]3CCC(=C)[C@@H]1[C@H]23	(1S*,3S*,4R*,7S*,8R*,12S*,13S*)-7-formamidoamphilecta-11(20),15-diene