Abmaj13 chord

The A-flat major thirteenth chord (abbreviated Abmaj13 chord) is a seven-note chord consisting of the notes A♭, C, E♭, G, B♭, D♭, and F. The chord is formed by adding a thirteenth to the A-flat major eleventh chord.

In practice, the fifth (E♭) and eleventh (D♭) are often omitted from the Abmaj13 chord to avoid a very dissonant sound, and because it's not always possible to play all notes simultaneously.