C/C=C(\C)C(=O)O[C@@H]1[C@H]2C[C@@]34OC2(O)[C@@](C)([C@@H](CC(=O)OC)C1(C)C)[C@H]3CC[C@]1(C)[C@H]4CC(=O)O[C@H]1c1ccoc1	xylocarpin A