P1(OC(C(O1)C(NC(=O)C(NC(=O)OC(C)(C)C)C(C)C)Cc2ccccc2)C(NC(=O)C(NC(=O)OC(C)(C)C)C(C)C)Cc3ccccc3)(c4ccccc4)(c5ccccc5)c6ccccc6