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