Using CCOC(=O)CC(=O)Cl, Nc1ncc(Br)cc1S(N)(=O)=O to produce CCOC(=O)CC(=O)Nc1ncc(Br)cc1S(N)(=O)=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.