Using COC(=O)c1ccc(C(=O)NCc2cn(-c3ccccc3)c3cc(Cl)ccc3c2=O)cc1 to produce O=C(O)c1ccc(C(=O)NCc2cn(-c3ccccc3)c3cc(Cl)ccc3c2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.