{HEAD ~ The alkyl ester} of these and other polybasic acids are suitable for {TAIL ~ use} in the present invention 
suitable for
{ HEAD ~ The alkyl ester } of these and other polybasic acids are suitable for { TAIL ~ use } in the present invention
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH