O1C2(C)CC(C)C1(O)C(C)C3OC(=O)OC3(C)C(CC)OC(=O)C(C)C(OC4OC(C)C(O)C(C)(OC)C4)C(C)C2OC5OC(C)CC(N(C)C)C5O.O=C(O)C=Cc6ccccc6