Using CCOC(C)=O, CC(=O)c1cc(Cl)c2c(c1Cl)C(C)(C)CCS2(=O)=O to produce CC1(C)CCS(=O)(=O)c2c(Cl)cc(C(=O)O)c(Cl)c21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.