piano chord
C7sus4
C1F4G5B♭♭7
A dominant seventh with the fourth standing in for the third.
What is true of it
C7sus4 is C, F, G and B♭ — 1, 4, 5 and b7 counted from C.
On an instrument that cannot reach all 4, the 5 goes first, in that order.
C in other shapes
C♯7sus4D♭7sus4D7sus4D♯7sus4E♭7sus4E7sus4F7sus4F♯7sus4all 374