D#11 chord

The D-sharp dominant eleventh chord (abbreviated D#11 chord) is a six-note chord consisting of the notes D♯, F, A♯, C♯, E♯, and G♯. The chord is formed by adding an eleventh to the D-sharp dominant ninth chord.

In practice, the third (F) and fifth (A♯) are often omitted from the D#11 chord to avoid a very dissonant sound, and because it's not always possible to play all notes simultaneously.