Using O=Cc1ccco1, NC(=O)c1c(Nc2cccc(Cl)c2)n[nH]c1N to produce NC(=O)c1c(Nc2cccc(Cl)c2)n[nH]c1NCc1ccco1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.