G Major 7#11, 3rd inversion (F# in the bass)
Also written as Gmaj7#11/F#.
Notes, from the bass up
F# (bass)C#GBD
The same notes as G Major 7#11 (F#, C#, G, B and D), rearranged so F# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.