G# Minor 9b5, 4th inversion (A# in the bass)
Also written as G#m9b5/A#.
Notes, from the bass up
A# (bass)G#BDF#
The same notes as G# Minor 9b5 (A#, G#, B, D and F#), rearranged so A# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.