Using O=C([O-])[O-], CCN(CC)C(=O)c1cccc2c(C[C@@H](C)N3C[C@@H](c4cccc(Cl)c4)OC3=O)c[nH]c12 to produce CCN(CC)C(=O)c1cccc2c(C[C@@H](C)N3C[C@@H](c4cccc(Cl)c4)OC3=O)cn(C)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.