O1c2c(C)c(O)c3C(=O)C4=CC(=O)c3c2C(=O)C1(C)OC=CC(OC)C(C)C(OC(=O)C)C(C)C(O)C(C)C(O)C(C)C=CC(O)C(C)C(=O)N4