cezomycin

Demethylamino-A-23187

2-[[(2R,3R,6S,8S,9R,11R)-3,9,11-Trimethyl-8-[(S)-1-methyl-2-oxo-2-(1H-pyrrol-2-yl)ethyl]-1,7-dioxaspiro[5.5]undec-2-yl]methyl]benzoxazole-4-carboxylic acid