Ab 13#11, 3rd inversion (F# in the bass)
Also written as Ab13#11/F#.
Notes, from the bass up
F# (bass)A#DE#G#B#D#
The same notes as Ab 13#11 (F#, A#, D, E#, G#, B# and D#), rearranged so F# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.