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