Using CCCn1c(N)c(NC(=O)/C=C/c2ccc(Cl)cc2)c(=O)n(CCC)c1=O to produce CCCn1c(=O)c2[nH]c(/C=C/c3ccc(Cl)cc3)nc2n(CCC)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.