Using O=C(O)c1ccc(-n2[nH]c3c(nnc4ccccc43)c2=O)cc1, NCc1ccccc1 to produce O=C(NCc1ccccc1)c1ccc(-n2[nH]c3c(nnc4ccccc43)c2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.