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PDE5 inhibitors are used in the treatment of erectile dysfunction (impotence). The most well known is sildenafil, or Viagra (CAS# 139755-83-2). Also included are avanafil (CAS# 330784-47-9), lodenafil (CAS# 398507-55-6), mirodenafil (CAS# 862189-95-5), tadalafil (CAS# 171596-29-5), udenafil (CAS# 268203-93-6) and vardenafil (CAS# 224785-90-4). This collection of models is provided as a C4D scene, all objects are editable primitives.