Eb 7b13, 2nd inversion (A# in the bass)
Also written as Eb7b13/A#.
Notes, from the bass up
A# (bass)C#BD#G
The same notes as Eb 7b13 (A#, C#, B, D# and G), rearranged so A# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.