Which of the following is the correct simple form of this compound sentence using a propositional phrase-"He was terribly unhappy but he did not blame the girB."

In spite in being terrible unhappy he did not blame the girB

In spit on being terribly unhappy he do not blame the girB.

In spite of being terribly unhappy he did not blame the girB.

In spite off being terribly unhappy he did not blame the girB.