Using O=C1CCC(=O)C1, C[C@@H](NC(=O)Nc1cc2[nH]nc(N)c2cn1)c1ccccc1 to produce C[C@@H](NC(=O)Nc1cc2[nH]nc(NC3=CC(=O)CC3)c2cn1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.