what drug formulation of hydrocortisone/acetic acid has strength more than 20.8?
(AND medicine.drug_formulation (AND (JOIN (R medicine.drug_strength.drug_formulations) (ge medicine.drug_strength.strength_value 20.8^^http://www.w3.org/2001/XMLSchema#float)) (JOIN (R medicine.drug.marketed_formulations) m.0hqvjzs)))