A 65-year-old man presents to your primary care office with pain in his right lower leg and is concerned about a possible blood clot. On examination, there is tenderness with palpation over the left calf muscles. His medical history includes hypertension, hyperlipidemia, and depression. Current medications are lisinopril, clonidine, rosuvastatin, sertraline, and aspirin. Before proceeding with investigations for a possible clot, you consider whether any of his medications might be contributing to his leg pain. Which medication is most likely responsible for his symptoms?