Using CCCCn1c2c(cc(N)c1=O)CCCC2, O=C=NCc1ccccc1 to produce CCCCn1c2c(cc(NC(=O)NCc3ccccc3)c1=O)CCCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.