Made using the <chemfig> package in LaTex.

\documentclass[10pt]{article}
\usepackage{chemfig}

\setdoublesep{0.091 cm}             % Bond Spacing
\setatomsep{14.4 pt}                % Bond length
\setcrambond{2 pt}{1 pt}{2.5 pt}    % {Bold width}{1pt}{Hash spacing}
\setbondoffset{1.6 pt}              % Margin Width
\setbondstyle{line width=0.6 pt}    % Line width 

\renewcommand*\printatom[1]{\normalsize \ensuremath{\mathsf{#1}}} 
    
\begin{document}

\schemestart
    \chemfig{
    *6( (-Cl) =  %bottom
        - *7(- (-*6(-=-=-=))
             =N
             -
             - *5(
                  =N
                  -N
                  = (-)
                  - N %write twice or there'll be no bond offset
                  )
             - N %write twice or there'll be no bond offset
             -
            ) 
        =
        - %top
        =
        - 
        )
    }
\arrow(.mid east--.mid west){->}[30,3]
    \chemfig{
    *6( (-Cl) =  %bottom
        - *7(- (-*6(-=-=-=))
             =N
             - (-[,1.3,,,magenta]\textcolor{magenta}{OH})
             - *5(
                  =N
                  -N
                  = (-)
                  - N %write twice or there'll be no bond offset
                  )
             - N %write twice or there'll be no bond offset
             -
            ) 
        =
        - %top
        =
        - 
        )
    }
\arrow(@c1.mid east--.mid west){->}[-30,3]
    \chemfig{
    *6( (-Cl) =  %bottom
        - *7(- (-*6(-=-=-=))
             =N
             -
             - *5(
                  =N
                  -N
                  = (- -[:90,1.3,,,magenta]\textcolor{magenta}{OH})
                  - N %write twice or there'll be no bond offset
                  )
             - N %write twice or there'll be no bond offset
             -
            ) 
        =
        - %top
        =
        - 
        )
    }
\schemestop
\end{document}

This image of a simple structural formula is ineligible for copyright and therefore in the public domain, because it consists entirely of information that is common property and contains no original authorship.