F 13#11, 3rd inversion (Eb in the bass)
Also written as F13#11/Eb.
Notes, from the bass up
Eb (bass)GBDFAC
The same notes as F 13#11 (Eb, G, B, D, F, A and C), rearranged so Eb is the lowest note. Use it to move between chords with smaller jumps across the keyboard.