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