\documentclass{ppex}
\nonstopmode
\usepackage {m-chemic}
\pagestyle{empty}
\setlength\textwidth{207.0pt}
\begin{document}
\ResetPreambleCommands
\ReadyForTheFray
\usepackage {m-chemic}
\setupchemical[axis=on]
\startchemical
  [width=6000,scale=small,size=medium]
 \chemical[CARBON,CB1][A,B,C,D,E,F]
\stopchemical
\end{document}
