Using Nc1ccc2[nH]cc(CCN3C(=O)c4ccccc4C3=O)c2c1, O=C(Cl)c1ccccc1 to produce O=C(Nc1ccc2[nH]cc(CCN3C(=O)c4ccccc4C3=O)c2c1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.