F 7alt, 3rd inversion (Gb in the bass)
Also written as F7alt/Gb.
Notes, from the bass up
Gb (bass)G#DbFAEb
The same notes as F 7alt (Gb, G#, Db, F, A and Eb), rearranged so Gb is the lowest note. Use it to move between chords with smaller jumps across the keyboard.