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