106220-05-7 6H-Oxazolo(4,5-g)pyrido(4,3-b)carbazolium, 7,10,12-trimethyl-2-(1-methylethyl)-, acetate 7,10,12-Trimethyl-2-(1-methylethyl)-6H-oxazolo(4,5-g)pyrido(4,3-b)carbazolium acetate