Administrative offices for Thomas Jefferson University and Jefferson Health will occupy about 230,000 square feet over 14 floors of the 32-story 1101 Market St. building, which will be renamed Jefferson Tower, it said in a release Friday. The 16-year lease also gives Jefferson, as the university and health network are collectively known, a glowing marquee sign atop the Center City high rise and the option to expand by another six floors, it said.