{TAIL ~ The polymer} 8, wherein at least 25% of the polymer comprises {HEAD ~ residues} of a compound 1 
{ TAIL ~ The polymer } 8 , wherein at least 25 % of the polymer comprises { HEAD ~ residues } of a compound 1
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH