Using COC(=O)c1cc(N(C)S(C)(=O)=O)c2cc[nH]c2c1, CCCCI to produce CCCCn1ccc2c(N(C)S(C)(=O)=O)cc(C(=O)O)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.