Is CHEBI:64624 the microcin B17 peptide or its unmodified precursor? #4928

Hi
we wonder if CHEBI:64624 - microcin B17 is really the microcin B17 peptide, or its unmodified precursor.

According to MetaCyc pathway (https://metacyc.org/pathway?orgid=META&id=PWY-8119), it may not be microcin B17 (https://metacyc.org/compound?orgid=META&id=CPD-22805) but its unmodified precursor in ChEBI.

The name microcin B17 applies to the modified peptide, which should contain multiple azole rings.