Using Brc1csc(Br)n1, CC(C)(C)OC(=O)N1CC(=O)C1 to produce CC(C)(C)OC(=O)N1CC(O)(c2nc(Br)cs2)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.