Using NC(N)=S, COc1ccc(C(=O)Cc2ccnc(NC(=O)OC(C)(C)C)c2)cc1 to produce COc1ccc(-c2nc(N)sc2-c2ccnc(N)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.