Using O=C([O-])[O-], CCNC(=O)NCc1cccc(-c2ccc(C(C)(C)CCCCC(=O)N3CCOCC3)cc2O)c1 to produce CCNC(=O)NCc1cccc(-c2ccc(C(C)(C)CCCCC(=O)N3CCOCC3)cc2OC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.