Using COCCBr, COC(=O)c1ccc(NS(C)(=O)=O)cc1Cl to produce COCCN(c1ccc(C(=O)OC)c(Cl)c1)S(C)(=O)=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.