Using CCCc1c2c(c(C(C)(C)C)c(OC(C)=O)c1C(C)(C)C)CC(C)(C)O2 to produce CCCc1c2c(c(C(C)(C)C)c(O)c1C(C)(C)C)CC(C)(C)O2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.