11-Nitronoracronycin 133761-41-8 3,12-Dihydro-6-hydroxy-3,3,12-trimethyl-11-nitro-7H-pyrano(2,3-c)acridin-7-one 7H-Pyrano(2,3-c)acridin-7-one, 3,12-dihydro-6-hydroxy-3,3,12-trimethyl-11-nitro-