{HEAD ~ The process} 1 in which the base employed in the hydrolysis of the Diels Alder adduct is {TAIL ~ an alkali metal} hydroxide 
{ HEAD ~ The process } 1 in which the base employed in the hydrolysis of the Diels Alder adduct is { TAIL ~ an alkali metal } hydroxide
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH