Using CCc1c(OC(C)=O)c(C(C)C)cc2c1C(=O)CC1(CCC1)O2 to produce CCc1c(O)c(C(C)C)cc2c1C(O)CC1(CCC1)O2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.