Using CCOC(=O)CC1(O)CCC(C)(C)c2cc(C3(C)OCCO3)ccc21 to produce CCOC(=O)CC1=CCC(C)(C)c2cc(C(C)=O)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.