COC(=O)[C@@H](OC(C)=O)C1[C@]2(C)[C@]3(O)C[C@]1(C)[C@H](OC(C)=O)[C@]3(O)[C@H]1OC3(C)O[C@@]24C[C@H](OC(C)=O)[C@]2(C)C(=CC(=O)O[C@H]2c2ccoc2)[C@@]14O3	xyloccensin R