Complex sentence: It was founded in 1846 as the Hyderabad Medical School and was previously affiliated to the Osmania University of Hyderabad, but is now under the gamut of Kaloji Narayana Rao University of Health Sciences.
Split into simpler sentences: It was founded in 1846 as the Hyderabad Medical School and was originally affiliated to Osmania University. The college is now affiliated with Kaloji Narayana Rao University of Health Sciences.