\begin{Verbatim}[commandchars=\\\{\}]
\PYG{g+gp}{\PYGZgt{}\PYGZgt{}\PYGZgt{} }\PYG{n}{atom\PYGZus{}list} \PYG{o}{=} \PYG{n}{Selection}\PYG{o}{.}\PYG{n}{unfold\PYGZus{}entities}\PYG{p}{(}\PYG{n}{chain}\PYG{p}{,} \PYG{l+s+s2}{\PYGZdq{}A\PYGZdq{}}\PYG{p}{)}
\end{Verbatim}
