Using CCOC(=O)c1c(-c2ccccc2Cl)c2cccnc2[nH]c1=O, CI to produce CCOC(=O)c1c(-c2ccccc2Cl)c2cccnc2n(C)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.