B 13#11, 2nd inversion (F# in the bass)
Also written as B13#11/F#.
Notes, from the bass up
F# (bass)AC#E#G#BD#
The same notes as B 13#11 (F#, A, C#, E#, G#, B and D#), rearranged so F# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.