piano chord
G♭7sus4
G♭1C♭4D♭5F♭♭7
A dominant seventh with the fourth standing in for the third.
Written the other way round it is F♯7sus4 — the same twelve keys on a piano, a different piece of notation.
What is true of it
G♭7sus4 is G♭, C♭, D♭ and F♭ — 1, 4, 5 and b7 counted from G♭.
On an instrument that cannot reach all 4, the 5 goes first, in that order.