Using CC1(C)CCC(C)(C)c2cc(C(=O)C3CCCCC3C(=O)O)ccc21 to produce CC1(C)CCC(C)(C)c2cc(C(O)C3CCCCC3C(=O)O)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.