F# Quartal (So What), 4th inversion (C# in the bass)
Also written as F# quartal/C#.
Notes, from the bass up
C# (bass)F#BEG#
The same notes as F# Quartal (So What) (C#, F#, B, E and G#), rearranged so C# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.