Using O=C1CCC(=O)N1Br, CC(C)(C)OC(=O)N1CCC(c2cccs2)CC1 to produce CC(C)(C)OC(=O)N1CCC(c2ccc(Br)s2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.