Using Clc1ccncc1, COc1ccc(-c2nc(S)[nH]c2-c2ccc(OC)cc2)cc1 to produce COc1ccc(-c2nc(Sc3ccncc3)[nH]c2-c2ccc(OC)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.