Using NCc1ccccc1, CC1CN(C(=O)OC(C)(C)C)C1(CC=O)C(=O)OC(C)(C)C to produce CC1CN(C(=O)OC(C)(C)C)C1(CCNCc1ccccc1)C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.