Why gulliver is called quinbus flestrin by lilliputians?

In Jonathan Swift's novel "Gulliver's Travels," Lemuel Gulliver is given the title "Quinbus Flestrin" by the Lilliputians as part of their tradition of using a person's first and last names in reverse order as a mark of respect and politeness. So, Gulliver's name is transformed to "Quinbus Flestrin" in this manner by the Lilliputians.