G Minor 9b5, 4th inversion (A in the bass)
Also written as Gm9b5/A.
Notes, from the bass up
A (bass)GBbDbF
The same notes as G Minor 9b5 (A, G, Bb, Db and F), rearranged so A is the lowest note. Use it to move between chords with smaller jumps across the keyboard.