A 30-year-old woman presents with a red, itchy rash in skin…

A 30-year-old woman presents with a red, itchy rash in skin folds (under breasts and groin) persisting for several weeks despite over-the-counter (OTC) antifungal creams. She has poorly controlled diabetes mellitus. Diagnosis: Cutaneous candidiasis caused by Candida albicans. Which of the following is the most appropriate treatment?