MSRA-1100

A 32-year-old male patient visits the sexual health clinic complaining of a recent genital lesion. The patient reports experiencing severe pain and first noticed the lesion one week ago. He admits to engaging in unprotected sexual activity with multiple partners within the past three months. Upon examination, a deep ulcer with a ragged border is observed on the penis shaft, accompanied by tenderness and inguinal lymphadenopathy. What is the probable diagnosis?