40. 下列化合物的 IUPAC 命名為何?
(A) 5-ethyl-2,4,6-trimethyl-3-propyloctane
(B) 4-ethyl-3,5,7-trimethyl-3-propyloctane
(C) 4-ethyl-6-isopropyl-3,5-dimethylnonane
(D) 6-ethyl-4-isopropyl-5,7-dimethylnonane
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統計: A(14), B(35), C(503), D(37), E(0) #1970186
統計: A(14), B(35), C(503), D(37), E(0) #1970186