Using Clc1cc(Br)ccc1I, Cc1ccc([N+](=O)[O-])cc1C(=O)Sc1ccccn1 to produce Cc1ccc([N+](=O)[O-])cc1C(=O)c1ccc(Br)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.