A 32-year-old man presents with a 3-day history of fever, purulent wound discharge, and erythema following a surgical procedure. Gram stain of the wound exudate shows Gram-positive cocci in clusters. Culture on blood agar grows golden-yellow colonies that are coagulase-positive and DNase-positive. The organism is susceptible to methicillin. What is the drug of choice for this methicillin-sensitive Staphylococcus aureus (MSSA) wound infection?