Using O=C1c2ccccc2S(=O)(=O)c2cc(-c3nnn[nH]3)ccc21 to produce O=S1(=O)c2ccccc2Cc2ccc(-c3nnn[nH]3)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.