Complex sentence: Because, of inconsistent results reported by other doctors, Broca did not again use hypnosis as an anesthetic, because of his patient's memory loss he saw the most potential in using it as using it as a psychological tool.
Split into simpler sentences: Because, of inconsistent results reported by other doctors, Broca did not again use hypnosis as an anesthetic. Because of his patient's memory loss, he saw the most potential in using it as a psychological tool.