Using CCOC(=O)[C@H]1CC[C@H](C2(c3ncc(Br)s3)CO2)CC1 to produce CCOC(=O)[C@H]1CC[C@H](C(CO)c2ncc(Br)s2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.