Ab 13b9, 3rd inversion (F# in the bass)
Also written as Ab13b9/F#.
Notes, from the bass up
F# (bass)AE#G#B#D#
The same notes as Ab 13b9 (F#, A, E#, G#, B# and D#), rearranged so F# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.