10-(3,5-Di-tert-butyl-4-hydroxybenzoyl)-3,7-di(diethylamino)phenoxazine 10H-Phenoxazine-3,7-diamine, 10-(3,5-bis(1,1-dimethylethyl)-4-hydroxybenzoyl)-N,N,N',N'-tetraethyl- 114766-08-4