Eb 7b13, 4th inversion (B in the bass)
Also written as Eb7b13/B.
Notes, from the bass up
B (bass)D#GA#C#
The same notes as Eb 7b13 (B, D#, G, A# and C#), rearranged so B is the lowest note. Use it to move between chords with smaller jumps across the keyboard.