D sharp suspended fourth flat ninth piano chord - D#b9sus
The D sharp suspended fourth flat ninth chord is a 5-note chord consisting of the notes D#, G#, A#, C# and E.
You can see these notes highlighted in the interactive piano chart below.
The chord itself is often abbreviated as D#b9sus.
Interactive piano diagram for the D sharp suspended fourth flat ninth chord
Chords that are a subset of D#b9sus. These contain less notes but all of them are included in D#b9sus.