Chemfig PBAT 结构

Question

我正在写我的硕士论文，在使用 PBAT 结构时遇到了麻烦chemfig。我无法像图中这样绘制它的结构：

你能帮我吗？提前谢谢

Answer 1

\documentclass[border=1cm]{standalone}
\usepackage{chemfig}

\begin{document}

\chemfig[angle increment=30,atom style={scale=0.7}]{
    H-[@{a1,0.5}1,1.5]O-[-1]-[1]-[-1]-[1]-[-1]O-[1](=[3]O)-[-1]-[1]-[-1]-[1]-[-1](=[9]O)-[@{z1,0.4}1,2]O(-[@{a2,0.8}:210,,,,draw=none])-[-1]-[1]-[-1]-[1]-[-1]O-[1](=[3]O)-[-1]*6([0]=-=(-[1](=[3]O)-[@{z2,0.6}-1,1.5]OH)-=-)
}
\polymerdelim[delimiters ={[]}, height = 33pt, depth = 28pt, indice = m]{a1}{z1}
\polymerdelim[delimiters ={[]}, height = 33pt, depth = 28pt, indice = n]{a2}{z2}

\end{document}