Using CCC=O, NCc1ccc(S(=O)(=O)c2ccc(S(N)(=O)=O)s2)cc1 to produce CCCNCc1ccc(S(=O)(=O)c2ccc(S(N)(=O)=O)s2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.