{TAIL ~ The method} of {HEAD ~ step c)73}, wherein the Z2 N R OH of step c) is selected from the group consisting of 2 ethanol and 3 propanol 
{ TAIL ~ The method } of { HEAD ~ step c)73 } , wherein the Z2 N R OH of step c ) is selected from the group consisting of 2 ethanol and 3 propanol
TAIL TAIL TAIL TAIL TAIL TAIL OTH 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