D Major 7#11, 3rd inversion (C# in the bass)
Also written as Dmaj7#11/C#.
Notes, from the bass up
C# (bass)G#DF#A
The same notes as D Major 7#11 (C#, G#, D, F# and A), rearranged so C# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.