B 13#11, 5th inversion (E# in the bass)
Also written as B13#11/E#.
Notes, from the bass up
E# (bass)G#BD#F#AC#
The same notes as B 13#11 (E#, G#, B, D#, F#, A and C#), rearranged so E# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.