I want to represent the following isomerization in LaTeX. It is the following:
However, so far, I have this:
Thank you in advance.
My MWE is:
\documentclass[a4paper,11pt,oneside]{book}
\usepackage[utf8]{inputenc}
\usepackage{mhchem}
\usepackage{chemfig}
\usepackage{pgfplots}
\usetikzlibrary{intersections, calc}
\pgfplotsset{compat=1.14}
\begin{document}
\begin{figure}[h!]
\centering
\schemestart
\chemfig{2-cis-butene}
\arrow{<=>}[45]
\chemfig{1-butene}
\arrow{<=>}[315]
\chemfig{2-trans-butene}
\schemestop
\caption{My caption}
\label{fig:isomer}
\end{figure}
\end{document}