Using CC1(C)C(=O)N([C@H]2C[C@@H](N)C2)c2nccnc21, O=C(O)c1nc2ccccc2[nH]1 to produce CC1(C)C(=O)N([C@H]2C[C@@H](NC(=O)c3nc4ccccc4[nH]3)C2)c2nccnc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.