Using NC(=O)CCl, CCOC1(OCc2cccc(Cl)c2)C=CC(N)=CC1 to produce CCOC1(OCc2cccc(Cl)c2)C=CC(NCC(N)=O)=CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.