4-Dimethylamino-1-[3-[(1-O-hexadecyl-2-O-ethyl-L-glycero-3-phospho)oxy]propyl]pyridinium C??? ??, ??, ??

4-Dimethylamino-1-[3-[(1-O-hexadecyl-2-O-ethyl-L-glycero-3-phospho)oxy]propyl]pyridinium ?? ?? ? ???

???

?? ??

4-Dimethylamino-1-[3-[(1-O-hexadecyl-2-O-ethyl-L-glycero-3-phospho)oxy]propyl]pyridinium ?? ??