The G-flat dominant seventh suspended fourth chord (abbreviated "Gb7sus4 chord") is a four-note chord consisting of the notes G♭, C♭, D♭, and F♭. The chord is formed by adding a minor seventh to a G-flat suspended fourth chord.
G-flat dominant seventh suspended fourth chord
G♭ C♭ D♭ F♭
1 4 5 ♭7
tetrad (four-note chord)