Esters of {HEAD ~ low molecular alkanoic acids}, such as {TAIL ~ C1} to C5 carboxylic acids, of low molecular alkanols, such as C1 C5 alkanols, are favored 
such as
Esters of { HEAD ~ low molecular alkanoic acids } , such as { TAIL ~ C1 } to C5 carboxylic acids , of low molecular alkanols , such as C1 C5 alkanols , are favored
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH