Using O=C(O)c1ccccc1, O=C(CBr)c1ccccc1[N+](=O)[O-] to produce O=C(OCC(=O)c1ccccc1[N+](=O)[O-])c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.