{HEAD ~ Di methyl derivative} of {TAIL ~ WS7622A substance}, physico chemical properties of which are as follows: 
{ HEAD ~ Di methyl derivative } of { TAIL ~ WS7622A substance } , physico chemical properties of which are as follows :
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH