O1C(C(C)C)C(C)C(OC(=O)C=CC(=O)NC2=C(O)CCC2=O)CC1(O)C(C)C(O)C(C)C3OC(=O)C(OC)=CC(C)=CC(C)C(O)C(C)CC(C)=CC=CC3OC