Using O=S(=O)(Cl)Cl, CCOC(=O)CCc1c(C)cc(Cl)c2c1C(=O)CCC2 to produce CCOC(=O)CCc1c(C)cc(Cl)c2c1C(=O)C(Cl)CC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.