(12Z,14E,24Z)-5,6,11,17,19-pentahydroxy-23-methoxy-2,4,9,12,16,18,20,22-octamethyl-1-oxo-1,2,9,10-tetrahydro-2,8-(epoxytetradeca[1,11,13]trieno)[1]benzofuro[4,5-g]quinazolin-21-yl acetate
CAS No. 62921-36-2
2,8-(Epoxytetradeca[1,11,13]trieno)benzofuro[4,5-g]quinazoline,rifamycin deriv.; NSC 262186