In the present application when no specific mention is made of {HEAD ~ the configuration} of {TAIL ~ a compound} then a mixture of such isomers, or either one of the isomers is intended 
of
In the present application when no specific mention is made of { HEAD ~ the configuration } of { TAIL ~ a compound } then a mixture of such isomers , or either one of the isomers is intended
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH