Using COC(=O)Cn1c(=O)n2c3c(cccc31)N(C)C(=O)C2 to produce CN1C(=O)Cn2c(=O)n(CC(=O)[O-])c3cccc1c32, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.