C/C=C(\C)C(=O)O[C@@H]1[C@@H]2[C@@H](OC(C)=O)C(C)(C)[C@H](CC(=O)OC)[C@@]3(C)[C@H]4CC[C@]5(C)C(=CC(=O)O[C@H]5c5ccoc5)[C@@]14O[C@@]23O	xylocarpin G