{HEAD ~ The dithiane} can be used as a non volatile carrier of {TAIL ~ the desired carbon and hydrogen labels} 
{ HEAD ~ The dithiane } can be used as a non volatile carrier of { TAIL ~ the desired carbon and hydrogen labels }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL