piano chord
D♯sus4
D♯1G♯4A♯5
The third replaced by the fourth, which leans on the third it is standing in for.
Written the other way round it is E♭sus4 — the same twelve keys on a piano, a different piece of notation.
What is true of it
D♯sus4 is D♯, G♯ and A♯ — 1, 4 and 5 counted from D♯.
These are also the notes of G♯sus2/D♯ and A♭sus2/D♯. Which name is right depends on what is underneath and what came before — the notes alone do not decide.