{TAIL ~ This mixture} is stirred for {HEAD ~ approximately 1 hour} and is then treated with a saturated ammonium chloride and extracted into a non polar solvent, such as, for example, diethyl ether 
{ TAIL ~ This mixture } is stirred for { HEAD ~ approximately 1 hour } and is then treated with a saturated ammonium chloride and extracted into a non polar solvent , such as , for example , diethyl ether
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH