added introduction first paragraph about aspirin

main.tex

@@ -33,6 +33,8 @@
 \geometry{margin = 1in}
 \usepackage{setspace}
 
+\usepackage{chemfig}
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %% Reference support
 %%
@@ -90,7 +92,8 @@
 \author[1]{Keshav Anand}
 \affil[1]{Plano East Senior High School, Plano, TX, United States}
 
-\title{Acid-Catalyzed Tandem Hydrolysis--Esterification of Acetylsalicylic Acid from Commerical Asprin Tablets to Form Methyl Salicylate}
+\title{Acid-Catalyzed Tandem Hydrolysis--Esterification of Acetylsalicylic Acid 
+from Commerical Asprin Tablets to Form Methyl Salicylate}
 % Use the \date command for email address(s) of corresponding authors
 
 
@@ -108,7 +111,23 @@
 
 \section{Introduction}
 
+Acetylsalicylic acid (ASA), \ch{C9H8O4}, is a synthetic organic derivative of salicylic acid 
+and is commonly known as aspirin.\\
+\begin{figure}[ht]
+  \centering
+  \vspace{1em} % Adds space above the molecule
+  \chemfig{*6(-=-(-O-[:-30](=[:-90]O)-[:+30]CH_3)=([:60]-[:90](=[:150]O)-[:30]OH)-=)}
+  \vspace{1em} % Adds space below the molecule
+  \caption{Chemical structure of ASA}
+  \label{fig:asa-structure}
+\end{figure}
 
+Commercial aspirin is commonly synthesized from salicylic acid through Eq~\ref{eq:aspirin-syn},
+and the two molecules differ by an ester group (\ch{-OCOCH3}).
+\begin{equation}
+    \ce{C7H6O3 + C4H6O3 ->[H2SO4] C9H8O4 + CH3COOH}
+    \label{eq:aspirin-syn}
+\end{equation}
 
 \section{Results and discussion}