```
% pandoc -f latex+raw_tex -t native
\begin{figure*}
  \centering
  \begin{overpic}{test_pic}
    \put (70,80) {Caption}
  \end{overpic}
\end{figure*}
^D
[RawBlock (Format "latex") "\\begin{figure*}\n  \\centering\n  \\begin{overpic}{test_pic}\n    \\put (70,80) {Caption}\n  \\end{overpic}\n\\end{figure*}"]
```