Db Major 7#11, 4th inversion (G in the bass)
Also written as Dbmaj7#11/G.
Notes, from the bass up
G (bass)C#E#G#B#
The same notes as Db Major 7#11 (G, C#, E#, G# and B#), rearranged so G is the lowest note. Use it to move between chords with smaller jumps across the keyboard.