D 13b9, 4th inversion (Eb in the bass)
Also written as D13b9/Eb.
Notes, from the bass up
Eb (bass)BDF#AC
The same notes as D 13b9 (Eb, B, D, F#, A and C), rearranged so Eb is the lowest note. Use it to move between chords with smaller jumps across the keyboard.