Using CCOC(=O)CBr, Cc1[nH]c2cccc([N+](=O)[O-])c2c1Sc1ccc(Cl)cc1 to produce CCOC(=O)Cn1c(C)c(Sc2ccc(Cl)cc2)c2c([N+](=O)[O-])cccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.