Using O=C(O)c1cc2ccccc2[nH]1, CC(C)(C)OC(=O)N1CCC[C@@H]2CNC[C@@H]21 to produce CC(C)(C)OC(=O)N1CCCC2CN(C(=O)c3cc4ccccc4[nH]3)CC21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.