Using C[C@H](NC(=O)OCc1ccccc1)C(=O)O, CC1(C)NCC(=O)N1 to produce CC(NC(=O)OCc1ccccc1)C(=O)N1CC(=O)NC1(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.