Db 7sus2, 2nd inversion (G# in the bass)
Also written as Db7sus2/G#.
Notes, from the bass up
G# (bass)BC#D#
The same notes as Db 7sus2 (G#, B, C# and D#), rearranged so G# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.