Eb Major 7#11, 2nd inversion (A# in the bass)
Also written as Ebmaj7#11/A#.
Notes, from the bass up
A# (bass)DAD#G
The same notes as Eb Major 7#11 (A#, D, A, D# and G), rearranged so A# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.