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