O1C2OC(C)C(=O)CC2OC3C1C(C)OC(C3)OC4C(C)OC(OC5CC(O)(CC)C(C(=O)OC)c6cc7C(=O)c8c(O)ccc(O)c8C(=O)c7c(O)c56)CC4N(C)C