11. How many peaks appear in the proton spin decoupled 13C-NMR spectrum of the compound below?
(A) 1
(B) 2
(C) 3
(D) 4
(E) 5
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統計: A(1), B(0), C(3), D(1), E(12) #1026896
統計: A(1), B(0), C(3), D(1), E(12) #1026896