Ebmaj11 chord

The E-flat major eleventh chord (abbreviated Ebmaj11 chord) is a six-note chord consisting of the notes E♭, G, B♭, D, F, and A♭. The chord is formed by adding an eleventh to the E-flat major ninth chord.

In practice, the fifth (B♭) is often omitted from the Ebmaj11 chord to avoid a very dissonant sound, and because it's not always possible to play all notes simultaneously.