${\displaystyle {\ce {H-{\overset {\displaystyle H \atop |}{\underset {| \atop \displaystyle H}{C}}}-{\overset {\displaystyle H \atop |}{\underset {| \atop \displaystyle H}{C}}}-{\overset {\displaystyle H \atop |}{\underset {| \atop \displaystyle H}{C}}}-{\overset {\displaystyle H \atop |}{\underset {| \atop \displaystyle H}{C}}}-H}}}$

記事の中で、画像を以下のものに置き換えてください。

<chem>H-

\overset{\displaystyle H \atop | }{\underset{ | \atop \displaystyle H}{C} }- \overset{\displaystyle H \atop | }{\underset{ | \atop \displaystyle H}{C} }- \overset{\displaystyle H \atop | }{\underset{ | \atop \displaystyle H}{C} }- \overset{\displaystyle H \atop | }{\underset{ | \atop \displaystyle H}{C} }- H</chem>

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