Question

SOS

（有機化合物命名）
請問這題為什麼不能叫我橘色筆跡寫的己烷呢
不是應該選最長碳鏈嗎

CH3CH₂CH2
A CSHIZ
13. A student gave a molecule the following name: 3-methyl-4-isopropylpentane. However, the teacher pointed out that, although the molecule
b could be correctly drawn from this name, the name violates the IUPAC rules. What is the correct (IUPAC) name of the molecule?
a) 2,3,4-trimethylhexane
a
b) 2-isopropyl-3-methylpentane
c) 1,1,2,3-tetramethylpentane
d) 4-isopropyl-3-methylpentane
e) 3,4-dimethylheptane
cc-c
C-c-c-c.fc
hexane
2,3,4