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\begin{document}

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\fromwhom{}{Pierre-Fran\c{c}ois Loos}{}{Laboratoire de Chimie et Physique Quantiques (UMR5626)}{loos@irsamc.ups-tlse.fr}{+33 5 6155 7339}{}
\setsalutation{To}
\renewcommand{\yoursdetails}{Yours sincerely, the authors}

\begin{letter}%
{the Editors of \textit{\journal{}}}

%\opening{Dear Editors,}

\vspace{-1em}
\justifying
Please find attached a manuscript entitled 
\vspace{-1.25em}
\begin{center}
\textbf{\papertitle{}}
\end{center}
\vspace{-1.25em}
that we recently submitted as a \underline{Regular Article} to the \textit{\journal}. 
We thank the reviewers for their constructive comments and for supporting publication of the present manuscript. 
Our detailed responses to their comments can be found below. 
For convenience, changes are highlighted in red in the revised version of the manuscript. We look forward to hearing from you.

\end{letter}

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\clearpage
{\large \bf Response to Reviewer 1:}
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\begin{formal}
bla bla bla
\end{formal}


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{\large \bf Response to Reviewer 2:}
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\begin{formal}
bla bla bla
\end{formal}


\end{document}
