The C-flat dominant seventh suspended fourth chord (abbreviated "Cb7sus4 chord") is a four-note chord consisting of the notes C♭, F♭, G♭, and B♭♭. The chord is formed by adding a minor seventh to a C-flat suspended fourth chord.
C-flat dominant seventh suspended fourth chord
C♭ F♭ G♭ B♭♭
1 4 5 ♭7
Tetrad (four-note chord)