Using CC(=O)O[BH-](OC(C)=O)OC(C)=O, Nc1c([N+](=O)[O-])c(Br)nn1CCO to produce O=[N+]([O-])c1c(Br)nn2c1NCOCC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.