Using O=[N+]([O-])[O-], COC(=O)N1C[C@H](N=[N+]=[N-])Cc2cc(Br)ccc21 to produce COC(=O)N1C[C@H](N=[N+]=[N-])Cc2cc(Br)cc([N+](=O)[O-])c21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.