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