Using O=[N+]([O-])c1ccc(O)cc1, BrCc1nc2ccccc2s1 to produce O=[N+]([O-])c1ccc(O)c(Cc2nc3ccccc3s2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.