Using OB(O)c1ccc2c(c1)OCO2, COc1ccc2nc(Br)sc2c1[N+](=O)[O-] to produce COc1ccc2nc(-c3ccc4c(c3)OCO4)sc2c1[N+](=O)[O-], please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.