Using CS(=O)(=O)Cl, Cc1nc(Br)[nH]c1C(=O)OC(C)C to produce Cc1nc(Br)n(S(C)(=O)=O)c1C(=O)OC(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.