Using CC1=NC(NC(=O)OCc2ccccc2)C(=O)Nc2ccccc21, CI to produce CC1=NC(NC(=O)OCc2ccccc2)C(=O)N(C)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.