$结构式:$ -
\usepackage{chemfig}
\begin{document}
\chemfig{
S-[1,0.8](-[,0.6]{(}CH_2{)}_4-[,1](=[1,0.6]O)-[7,0.6]NH{~~~})
-[2.7,0.6](-[1.3,0.6]N(-[,0.2]H)(-[3.2,0.78](=[2,0.6]O)))
-[4,0.6](-[2.7,0.6]N(-[4,0.6](=[3,0.6]O)(-[5,0.6])HO)(-[0.8,0.78]))
-[5.3,0.6]
-[7,0.6]
}
\end{document}