【单选题】【消耗次数:1】
下列化合物中,有顺反异构的是(   )
<img src="https://file.icve.com.cn/file_doc_public/386/896/609E037ABB8029EF8AFA9ADBF7CA6BA9.png" title="1.png" alt="1.png">
<img src="https://file.icve.com.cn/file_doc_public/20/377/0535E4A2061EB47828F3D1DBCB2A67DC.png" title="2.png" alt="2.png">
<img src="https://file.icve.com.cn/file_doc_public/599/651/95EA2CC72A8DD8BA4F80B687B3F13FCC.png" title="3.png" alt="3.png">
<img src="https://file.icve.com.cn/file_doc_public/877/906/DB6E2B6CB729DA11CD53C13C47CC2B3F.png" title="4.png" alt="4.png">
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