Cbm9 chord

The C-flat minor ninth chord (abbreviated Cbm9 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 minor seventh chord.

In practice, the fifth (G♭) is sometimes omitted from the Cbm9 chord because it's not always possible to play all notes simultaneously.