A 13#11, 6th inversion (F# in the bass)
Also written as A13#11/F#.
Notes, from the bass up
F# (bass)AC#EGBD#
The same notes as A 13#11 (F#, A, C#, E, G, B and D#), rearranged so F# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.