Using CCOc1c([N+](=O)[O-])cc(C=O)c(Br)c1OCC, COC(=O)CS to produce CCOc1c([N+](=O)[O-])cc2cc(C(=O)OC)sc2c1OCC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.