G Major 9#11, 5th inversion (C# in the bass)
Also written as Gmaj9#11/C#.
Notes, from the bass up
C# (bass)GBDF#A
The same notes as G Major 9#11 (C#, G, B, D, F# and A), rearranged so C# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.