C Minor 9b5, 4th inversion (D in the bass)
Also written as Cm9b5/D.
Notes, from the bass up
D (bass)CEbGbBb
The same notes as C Minor 9b5 (D, C, Eb, Gb and Bb), rearranged so D is the lowest note. Use it to move between chords with smaller jumps across the keyboard.