C# Minor Major 9th, 2nd inversion (G# in the bass)
Also written as C#m(maj9)/G#.
Notes, from the bass up
G# (bass)B#D#C#E
The same notes as C# Minor Major 9th (G#, B#, D#, C# and E), rearranged so G# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.