\documentclass[10pt,border=1pt,tikz,class=scrartcl,multi=false]{standalone}
\usepackage{chemfig,chemmacros}
\renewcommand*{\familydefault}{\sfdefault}
\renewcommand*\printatom[1]{\ensuremath{\mathsf{#1} } }
\setatomsep{3em}
\setdoublesep{.6ex}
\setarrowdefault{,1,ultra thick}
\setbondstyle{very thick}
\definesubmol\nobond{-[,0.2,,,draw=none]}
\pagestyle{empty}
\thispagestyle{empty}
\begin{document}
\definesubmol{gluco}{
	<[::-10](-[::135]OH)
	-[::20,,,,line width=0.4em](-[::-20,,,1]OH)
	>[::-60](-[::60]OH)
	-[::-140](-[::160,0.7]-[::-90,0.7]HO)
	-[::20]O
	-[::-60]
}
\chemfig{
	HO-[:30]*6(=
		(-!{gluco})
	-
		(-[:-30]O-[::60]*6(<>
			(-OH)
			(<:[6]O-[::-60](<[::60]CO_2H)-[::-60]>:[2])
		-(=O)-=-)-[2]-[4,1.75])
	=-=-)
}
\end{document}