Using Cc1cc(Br)ccc1C(CCOS(C)(=O)=O)CNC(=O)OC(C)(C)C to produce Cc1cc(Br)ccc1C1CCN(C(=O)OC(C)(C)C)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.