Using COC(=O)Cl, CCCn1c(=O)c2c(NC)n[nH]c2c2ccccc21 to produce CCCn1c(=O)c2c(NC)nn(C(=O)OC)c2c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.