Eb Augmented Major 7th, 2nd inversion (B in the bass)
Also written as Ebaug(maj7)/B.
Notes, from the bass up
B (bass)DD#G
The same notes as Eb Augmented Major 7th (B, D, D# and G), rearranged so B is the lowest note. Use it to move between chords with smaller jumps across the keyboard.