Using Clc1cc(Cl)ncn1, O=[N+]([O-])c1cccc(-c2ccc3c(Br)c[nH]c3c2)c1 to produce O=[N+]([O-])c1cccc(-c2ccc3c(Br)cn(-c4cc(Cl)ncn4)c3c2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.