B 13#11, 3rd inversion (A in the bass)
Also written as B13#11/A.
Notes, from the bass up
A (bass)C#E#G#BD#F#
The same notes as B 13#11 (A, C#, E#, G#, B, D# and F#), rearranged so A is the lowest note. Use it to move between chords with smaller jumps across the keyboard.