Some necessary note names are not available.

I need Cb to name my chords but I have to use B, and there are a lot of Cb chords in this song that I am editing.

[MV] IU(아이유) _ The red shoes(분홍신) (Performance ver.)

There is no B#, Cb, E# or Fb and they are often necessary to name chords in a way that makes sense. I have an Abm7 (Ab Cb Eb Gb) followed by Cb (Cb Eb Gb) but I have to write the Cb as B (B D# F#).