Eb 13#11, 2nd inversion (A# in the bass)
Also written as Eb13#11/A#.
Notes, from the bass up
A# (bass)C#E#AB#D#G
The same notes as Eb 13#11 (A#, C#, E#, A, B#, D# and G), rearranged so A# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.