Using O=C(OCc1ccccc1)C(C(=O)OCc1ccccc1)c1ncc(Br)cc1[N+](=O)[O-] to produce O=C1Cc2ncc(Br)cc2N1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.