Db 7alt, 1st inversion (E# in the bass)
Also written as Db7alt/E#.
Notes, from the bass up
E# (bass)BDEAC#
The same notes as Db 7alt (E#, B, D, E, A and C#), rearranged so E# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.