Using O=C([O-])c1cc(N2CCOC2=O)cc(N2C(=O)[C@@]3(C[C@@H]3c3ccc(Cl)cc3)c3ccccc32)c1 to produce O=C(O)c1cc(N2CCOC2=O)cc(N2C(=O)[C@@]3(C[C@@H]3c3ccc(Cl)cc3)c3ccccc32)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.