CCC12CC3C4(O1)C(O2)C1(O)C(OC(C)=O)C2(C)CC1(O)C1(COC(=O)CC21)C4(O)C(OC(C)=O)C(OC(C)=O)C3(C)C(OC(C)=O)C1=COC=C1