4-Benzoxazolecarboxylic acid, 2-((3,9-dimethyl-8-(1-methyl-2-oxo-2-(1H-pyrrol-2-yl)ethyl)-1,7-dioxaspiro(5.5)undec-2-yl)methyl)-5-hydroxy-, (2R-(2alpha,3alpha,6beta(8S*(S*),9R*)))- 83917-57-1 Antibiotic X 14885A Nrrl 12350 X 14885A X-14885A