2-[3-(5-Phenyl-3-ethylbenzoxazole-2-ylidene)-2-ethyl-1-propenyl]-5-phenyl-3-ethylbenzoxazole-3-ium

2-[2-[3-Ethyl-5-phenylbenzoxazole-2(3H)-ylidenemethyl]-1-butenyl]-3-ethyl-5-phenylbenzoxazole-3-ium

3-Ethyl-2-[2-[(3-ethyl-5-phenylbenzoxazol-2(3H)-ylidene)methyl]-1-butenyl]-5-phenylbenzoxazol-3-ium

3-Ethyl-2-[2-ethyl-3-(3-ethyl-5-phenyl-2,3-dihydrobenzoxazole-2-ylidene)-1-propenyl]-5-phenylbenzoxazolium

2-[2-(3-Ethyl-5-phenyl-2,3-dihydrobenzoxazole-2-ylidenemethyl)-1-butenyl]-3-ethyl-5-phenylbenzoxazole-3-ium

2-[2-[[(3-Ethyl-5-phenyl-2,3-dihydrobenzoxazole)-2-ylidene]methyl]-1-butenyl]-3-ethyl-5-phenylbenzoxazole-3-ium