piano chord
E♭m9
E♭1G♭♭3B♭5D♭♭7F9
A minor seventh with a ninth on top.
Written the other way round it is D♯m9 — the same twelve keys on a piano, a different piece of notation.
What is true of it
E♭m9 is E♭, G♭, B♭, D♭ and F — 1, b3, 5, b7 and 9 counted from E♭.
On an instrument that cannot reach all 5, the 5 and 1 go first, in that order.