What is the chemical formula and chemical structure of the molecule according to the following spectra?

\begin{tabular}{|c|c|} \hline m/z & Relative Height (\%) \\ \hline 135 & 4.9 \\ \hline 136 & 100 \\ \hline 137 & 8.9 \\ \hline 138 & 1.7 \\ \hline \end{tabular} \begin{tabular}{|c|c|} \hline m/z & Relative Height (\%) \\ \hline 135 & 4.9 \\ \hline 136 & 100 \\ \hline 137 & 8.9 \\ \hline 138 & 1.7 \\ \hline \end{tabular}