Using NCc1ccccc1, CC(C)(C)OC(=O)c1c(N)sc2c1CC(C(=O)O)OC2 to produce CC(C)(C)OC(=O)c1c(N)sc2c1CC(C(=O)NCc1ccccc1)OC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.