Using COC(=O)[C@H](CCSC)N(C(=O)OC(C)(C)C)C(=O)c1ccc(N)cc1 to produce COC(=O)[C@H](CCSC)NC(=O)c1ccc(N)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.