F sharp suspended fourth flat ninth piano chord - F#b9sus
The F sharp suspended fourth flat ninth chord is a 5-note chord consisting of the notes F#, B, C#, E and G.
You can see these notes highlighted in the interactive piano chart below.
The chord itself is often abbreviated as F#b9sus.
Interactive piano diagram for the F sharp suspended fourth flat ninth chord
Chords that are a subset of F#b9sus. These contain less notes but all of them are included in F#b9sus.