C Augmented Major 7th, 2nd inversion (G# in the bass)
Also written as Caug(maj7)/G#.
Notes, from the bass up
G# (bass)BCE
The same notes as C Augmented Major 7th (G#, B, C and E), rearranged so G# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.