[4,11-diethyl-6-methyl-2-(trifluoromethyl)-1-azatricyclo[7.3.1.05,13]trideca-5(13),6,8-trien-7-yl]-(4-ethoxy-1,2-oxazol-3-yl)diazene;1-[3-[(1,6-dimethyl-2,3-dihydroindol-5-yl)diazenyl]-5-methyl-1,2-oxazol-4-yl]ethanone;(5-ethyl-1,2-oxazol-3-yl)-(1-ethyl-2,3,3,6-tetramethyl-2H-indol-5-yl)diazene;5-methyl-3-[(2,2,6,11,11-pentamethyl-1-azatricyclo[7.3.1.05,13]trideca-5(13),6,8-trien-7-yl)diazenyl]-1,2-oxazole-4-carboxylic acid;(7-methyl-1-prop-2-enyl-3,4-dihydro-2H-quinolin-6-yl)-(5-prop-2-enyl-1,2-oxazol-3-yl)diazene