Using CCCCn1c(=O)c2c(NC)n[nH]c2n(Cc2ccccc2)c1=O, O=C([O-])[O-] to produce CCCCn1c(=O)c2c(NC)n(C)nc2n(Cc2ccccc2)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.