O1c2c(C)c(O)c3C(=O)C4NC(=O)C(C)=CC(=O)C5CC5C(O)C(C)=C(O)C(C)C(OC(=O)C)C(C)C(OC)C=COC1(C)C(=O)c2c3C(=O)C4