Using O=S(Cl)Cl, CCCCc1nn(-c2cc([N+](=O)[O-])ccc2Cl)c(C(=O)O)c1Cc1ccc(Br)cc1F to produce CCCCc1nn(-c2cc([N+](=O)[O-])ccc2Cl)c(C(=O)Cl)c1Cc1ccc(Br)cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.