Using COC(=O)C(C)(C)NC(=O)c1csc(CNC(=O)OC(C)(C)C)n1 to produce CC(C)(C)OC(=O)NCc1nc(C(=O)NC(C)(C)C(=O)O)cs1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.