1-Azetidineacetic acid, 3-(((4-(3-amino-3-carboxypropoxy)phenyl)(hydroxyimino)acetyl)amino)-alpha-(4-hydroxyphenyl)-2-oxo-, (3S-(1(S*),3R*(Z(S*))))- 39391-39-4 Antibiotic FR 1923 FR-1923-C Nocardicin A