G Minor 9b5, 2nd inversion (Db in the bass)
Also written as Gm9b5/Db.
Notes, from the bass up
Db (bass)FAGBb
The same notes as G Minor 9b5 (Db, F, A, G and Bb), rearranged so Db is the lowest note. Use it to move between chords with smaller jumps across the keyboard.