[[5-氨基咪唑-4-氨甲酰核苷酸（AICAR）]]+[[N10-甲酰四氢叶酸（10-formyl-THF）]]->[[5-甲酰胺基咪唑-4-氨甲酰核苷酸（FAICAR）]]+[[四氢叶酸（THF）]]
• B站版本：
\usepackage{chemfig}
\begin{document}
\chemfig{
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-[3.5,0.6](-[3.3,0.25]4)(-[4.5,0.7]N(-[2,0.25]3)(-[4,0.3]H_2))
=[2,0.8](-[4.8,0.25]5)(-[3,0.7](=[2,0.7]O)
(
-[4.7,0.8]N(-[2,0.3]1)
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(-[6,0.25]6))
-[0.5,0.8]N(-[5.5,0.25]7)(-[,0.3]H)
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}
+^{10}-CHO-FH_4$
\begin{tikzpicture}
\draw [->] (0,0) to node[above] {ATIC(E1)} (1,0);
\end{tikzpicture}
\chemfig{
\fbox{R}-[2,0.8]N(-[2,0.25]9)
-[3.5,0.6](-[3.3,0.25]4)(-[4.5,0.7]N(-[2,0.25]3)=[3.3,0.6](-[5,0.25]2))
=[2,0.8](-[4.8,0.25]5)(-[3,0.7](=[2,0.7]O)
(
-[4.7,0.8]N(-[2,0.3]1)
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}
+
$
\end{document}