The E flat dominant thirteenth chord is a 6-note chord consisting of the notes Eb, G, Bb, Db, F and C.
You can see these notes highlighted in the interactive piano chart below.
The chord itself is often abbreviated as Eb13.
Interactive piano diagram for the E flat dominant thirteenth chord
Reduced chords
Chords that are a subset of Eb13. These contain less notes but all of them are included in Eb13.
E flat dominant thirteenth piano chord chart image
In case you prefer a non-interactive variant of the chord chart, we've embedded a PNG image below that shows
the notes for the the Eb13 chord. Feel free to save or share the image as needed.