71. What is the major product of the following reaction? 
(A) Ⅰ
(B) Ⅱ
(C)Ⅰ and  Ⅲ
(D) Ⅳ
(E) Ⅴ

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統計: A(0), B(1), C(1), D(1), E(0) #1037057

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#7258790
答案選 (D) Ⅳ(cyclopent...
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