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