G Major 7#11, 2nd inversion (D in the bass)
Also written as Gmaj7#11/D.
Notes, from the bass up
D (bass)F#C#GB
The same notes as G Major 7#11 (D, F#, C#, G and B), rearranged so D is the lowest note. Use it to move between chords with smaller jumps across the keyboard.