Chord Bbsus2 (3rd fret) notes: Bb, C, F and Bb. You must leave out the 2nd and 1st strings.
This chord is played by placing a barre on fret three with your index finger.
Bbsus2 - Bb suspended 2nd guitar chord is often noted with non-standard names like Bb5add2, Bb2(no3) or Bb2. Sometimes it's referred to as Bbadd9(no3).
1(A#/Bb), 2(C), 5(F).