\documentclass[12pt,border=1pt,tikz,class=scrartcl,multi=false]{standalone}
\usepackage{helvet}
\usepackage[T1]{fontenc}
\usepackage[latin1]{inputenc}
\usepackage{mathtools,amssymb}
\usepackage{pgfplots}
\pgfplotsset{compat=1.12}
\usetikzlibrary{positioning,calc,arrows,fit,backgrounds,decorations.text,shapes}
 
\usepackage{chemfig,chemmacros}
\renewcommand*{\familydefault}{\sfdefault}
\renewcommand*\printatom[1]{\ensuremath{\mathsf{#1}}}
\setatomsep{1.7em}
\setdoublesep{.6ex}
\setarrowdefault{,1,ultra thick}
\setbondstyle{thick,cap=round}
\definesubmol\nobond{-[,0.2,,,draw=none]}
 
\pagestyle{empty}
\thispagestyle{empty}
\begin{document}
\begin{tikzpicture}
	\node [inner sep=2pt]{\chemfig{
		HO-[:120](!\nobond\hspace{-15pt}{\scriptscriptstyle3})
		-[::-60](=[0]O)(!\nobond\hspace{-3pt}\chemabove[3pt]{}{\scriptscriptstyle2})
		-[::60](!\nobond\hspace{-15pt}{\scriptscriptstyle1})
		-[::-60]O
		-[::60]P(=[::-90]O)(-[::90]O(-[::0,.45,,,draw=none]\fmch))
		-[::0]O(-[::0,.25,,,draw=none]\fmch)
	}};
\end{tikzpicture}
\end{document}