the most excruciating 86 minutes one 
(ROOT (NP (NP (DT the) (ADJP (RBS most) (JJ excruciating)) (CD 86) (NNS minutes)) (NP (CD one))))
(ROOT (NP (NP (DT ) (ADJP (RBS ) (JJ )) (CD ) (NNS )) (NP (CD ))))