\documentclass[12pt,border=-2pt,tikz,class=scrartcl]{standalone}
\usepackage[T1]{fontenc}
\usepackage[latin1]{inputenc}
\usepackage{lmodern}
\usepackage{mathtools}
\usepackage{bytefield}
\usetikzlibrary{positioning,calc}

\usepackage{chemfig,chemmacros}
\renewcommand*{\familydefault}{\sfdefault}
\renewcommand*\printatom[1]{\ensuremath{\mathsf{#1} } }
\setatomsep{1.5em}
\setdoublesep{.6ex}
\setarrowdefault{,1.5,thick}
\setbondstyle{thick,cap=round}

\pagestyle{empty}
\begin{document}
\begin{tikzpicture}
	\node (n1) {\chemfig{
		*6(--(-)(-)-
		(-[,,,,red]=_[::-60,,,,red]-[::60,,,,red](-[2])
		=^[::-60,,,,red]-[::60,,,,red]=_[::-60,,,,red]-[::60,,,,red](-[2])
		=^[::-60,,,,red]-[::60,,,,red]=_[::-60,,,,red]-[::60,,,,red]=_[::-60,,,,red](-[6])
		-[::60,,,,red]=_[::-60,,,,red]-[::60,,,,red]=_[::-60,,,,red](-[6])
		-[::60,,,,red]=_[::-60,,,,red]-[::60,,,,red]
		*6(=[,,,,red](-)----(-[::-30])(-[::-90])-))
		=[,,,,red](-)--)
	} };
\end{tikzpicture}
\end{document}