C# Minor 9b5, 1st inversion (E in the bass)
Also written as C#m9b5/E.
Notes, from the bass up
E (bass)GBD#C#
The same notes as C# Minor 9b5 (E, G, B, D# and C#), rearranged so E is the lowest note. Use it to move between chords with smaller jumps across the keyboard.