Virginiamycin S3

Staphylomycin S3

5-(5-Hydroxy-4-oxo-L-2-piperidinecarboxylic acid)virginiamycin S1

N-[(3-Hydroxy-2-pyridinyl)carbonyl]cyclo[L-Thr*-D-Abu-L-Pro-N-methyl-L-Phe-4-oxo-5-hydroxy-L-pipecoloyl-L-phenyl Gly-]