40. The proton NMR of a compound, C8H9ClO, has the following peaks. Which compound below best fits the data?
broad singlet 2.00 (1H)
 triplet 2.41 (2H)
 triplet 3.69 (2H) 
doublet 7.02 (2H)
 doublet 7.50 (2H) 

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統計: A(11), B(7), C(173), D(9), E(0) #923023

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