Cbmaj9 chord

The C-flat major ninth chord (abbreviated Cbmaj9 chord) is a five-note chord consisting of the notes C♭, E♭, G♭, B♭, and D♭. The chord is formed by adding a major ninth to the C-flat major seventh chord.

In practice, the fifth (G♭) is sometimes omitted from the Cbmaj9 chord because it's not always possible to play all notes simultaneously.