Using O=C(Cl)Oc1ccccc1, Nc1ncc(CCN2C(=O)c3ccccc3C2=O)s1 to produce O=C(Nc1ncc(CCN2C(=O)c3ccccc3C2=O)s1)Oc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.