Ab 7b13, 3rd inversion (F# in the bass)
Also written as Ab7b13/F#.
Notes, from the bass up
F# (bass)EG#B#D#
The same notes as Ab 7b13 (F#, E, G#, B# and D#), rearranged so F# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.