Dbmaj11 chord

The D-flat major eleventh chord (abbreviated Dbmaj11 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-flat major ninth chord.

In practice, the fifth (A♭) is often omitted from the Dbmaj11 chord to avoid a very dissonant sound, and because it's not always possible to play all notes simultaneously.