DPPC (Dipalmitoylphosphatidylcholine) DSPC and DMPC in Latex

Using chemfig I was able to represent DPPC (Dipalmitoylphosphatidylcholine) and other lipids in Latex by using the following code

\newcommand\setpolymerdelim\[2\]{\def\delimleft{#1}\def\delimright{#2}}
\def\makebraces\[#1,#2\]#3#4#5{%
\edef\delimhalfdim{\the\dimexpr(#1+#2)/2}%
\edef\delimvshift{\the\dimexpr(#1-#2)/2}%
\chemmove{%
\node\[at=(#4),yshift=(\delimvshift)\]
{$\left\delimleft\vrule height\delimhalfdim depth\delimhalfdim
width0pt\right.$};%
\node\[at=(#5),yshift=(\delimvshift)\]
{$\left.\vrule height\delimhalfdim depth\delimhalfdim
width0pt\right\delimright_{\rlap{$\scriptstyle#3$}}$};}}
_\setpolymerdelim\[\]_

\begin{figure}
\small
\setatomsep{1.5em}
\chemfig{N^+(-\[:180,1.1\]H_3C)(-\[:90,1.3\]CH_3)(-\[:270,1.3\]CH_3)(-\[:-30\]-\[:30\]-\[:-30\]O-\[:30,1.3\]P^+(<\[:50,1.5\]O\rlap{${}^-$})(<:\[:130,1.5\]O\rlap{${}^-$})(-#(1pt,)\[:330,1.3\]O-\[:30\]-\[:-30\](-\[:270\]O-\[:-30\](=\[:270\]O)(-\[@{downleft,0.8}:30\]CH_2-#(1pt,1pt)\[@{downright,0.3}:-30,1.2\]CH_3))(-\[:30\]-\[:-30\]O-\[:30\](=\[:90\]O)(-\[@{upleft,0.8}:-30\]CH_2-#(1pt,1pt)\[@{upright,0.3}:30,1.2\]CH_3))))}
\makebraces\[10pt,13pt\]{n}{downleft}{downright}
\makebraces\[6pt,15pt\]{n}{upleft}{upright}
\label{fig:lipids}
\end{figure}

The crucial line is: \chemfig{N^+(-\[:180,1.1\]H_3C)(-\[:90,1.3\]CH_3)(-\[:270,1.3\]CH_3)(-\[:-30\]-\[:30\]-\[:-30\]O-\[:30,1.3\]P^+(<\[:50,1.5\]O\rlap{${}^-$})(<:\[:130,1.5\]O\rlap{${}^-$})(-#(1pt,)\[:330,1.3\]O-\[:30\]-\[:-30\](-\[:270\]O-\[:-30\](=\[:270\]O)(-\[@{downleft,0.8}:30\]CH_2-#(1pt,1pt)\[@{downright,0.3}:-30,1.2\]CH_3))(-\[:30\]-\[:-30\]O-\[:30\](=\[:90\]O)(-\[@{upleft,0.8}:-30\]CH_2-#(1pt,1pt)\[@{upright,0.3}:30,1.2\]CH_3))))}

You’ll also need to include the following in the preamble

\usepackage{chemfig}

Which produces something that looks like this: