Using CC(C)(C)OC(=O)CC1(c2ccc(Br)s2)CCN(C(=O)OC(C)(C)C)CCS1(=O)=O to produce CC(C)(C)OC(=O)CC1(c2ccc(Br)s2)CCNCCS1(=O)=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.