Using CCC(O)(CC)CCCOCCC1CC2C(O)CCCC2(C)C1(C)C to produce CCC(O)(CC)CCCOCCC1CC2C(=O)CCCC2(C)C1(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.