B 13sus4, 5th inversion (G# in the bass)
Also written as B13sus4/G#.
Notes, from the bass up
G# (bass)BEF#AC#
The same notes as B 13sus4 (G#, B, E, F#, A and C#), rearranged so G# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.