{HEAD ~ The compound} 1 wherein {TAIL ~ a member} selected from Ra, Rb Re and Rj is: 
wherein
{ HEAD ~ The compound } 1 wherein { TAIL ~ a member } selected from Ra , Rb Re and Rj is :
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH