When the oxygenate is an alcohol, {HEAD ~ the alcohol} can include {TAIL ~ an aliphatic moiety} having from 1 to 10 carbon atoms, more preferably from 1 to 4 carbon atoms 
When the oxygenate is an alcohol , { HEAD ~ the alcohol } can include { TAIL ~ an aliphatic moiety } having from 1 to 10 carbon atoms , more preferably from 1 to 4 carbon atoms
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH