B Major 7#11, 4th inversion (E# in the bass)
Also written as Bmaj7#11/E#.
Notes, from the bass up
E# (bass)BD#F#A#
The same notes as B Major 7#11 (E#, B, D#, F# and A#), rearranged so E# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.