Db 13b9, 4th inversion (D in the bass)
Also written as Db13b9/D.
Notes, from the bass up
D (bass)A#C#E#G#B
The same notes as Db 13b9 (D, A#, C#, E#, G# and B), rearranged so D is the lowest note. Use it to move between chords with smaller jumps across the keyboard.