B Major 9#11, 2nd inversion (F# in the bass)
Also written as Bmaj9#11/F#.
Notes, from the bass up
F# (bass)A#C#E#BD#
The same notes as B Major 9#11 (F#, A#, C#, E#, B and D#), rearranged so F# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.