{TAIL ~ Hydrocarbyl} is {HEAD ~ an organic group} composed solely of carbon and, as appropriate, hydrogen, and may be aliphatic, alicyclic, aromatic, or combinations thereof, being aliphatically saturated or unsaturated, normally having not more than about one site of unsaturation 
{ TAIL ~ Hydrocarbyl } is { HEAD ~ an organic group } composed solely of carbon and , as appropriate , hydrogen , and may be aliphatic , alicyclic , aromatic , or combinations thereof , being aliphatically saturated or unsaturated , normally having not more than about one site of unsaturation
TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH