O1C2(C)OC34CC(=O)OC(C5=COC=C5)C4(C)CC(OC(=O)C(C)CC)C6(O2)C13C(OC(=O)C(C)C)C7(O)C(OC(=O)C8(C)OC8C)C9(C)CC7(O)C6(C)C9CC(=O)OC