Ab Major 7#11, 4th inversion (D in the bass)
Also written as Abmaj7#11/D.
Notes, from the bass up
D (bass)G#B#D#G
The same notes as Ab Major 7#11 (D, G#, B#, D# and G), rearranged so D is the lowest note. Use it to move between chords with smaller jumps across the keyboard.