O(C1OC(C)C(OC(=O)C)C(C)(C1)OC(=O)C)C2C(C)OC(OC3C(CC=O)CC(C)C(C=CC=CCC(C)OC(=O)CC(OC(=O)C)C3OC)OC4CCC(N(C)C)C(C)O4)C(O)C2N(C)C