Using CCS(=O)(=O)c1cccc(-c2ccc3cnc(O)nn23)c1, CCS(=O)(=O)c1cccc(-c2ccc3cnc(SC)nn23)c1 to produce CCS(=O)(=O)c1cccc(-c2ccc3cnc(S(C)(=O)=O)nn23)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.