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\documentclass{report}
\usepackage{german}
\usepackage[separate]{ochem}
\begin{document}
\begin{chemistry}
formula(L,R,"Indigo",HR,24)
{
ring(,,H,,5,0){
vertex(,2){};
0: bond(r,=C,L) ring(,0,H,,5,r){
vertex(,2){};
1: atom("N") bond(r) atom("H");
4: bond(r,=C) atom("O");
};
1: atom("N") bond(r) atom("H");
4: bond(r,=C) atom("O");
}
}
\end{chemistry}
\begin{chemistry}
formula(L,R,"\shortstack{6,6'-Dibrom-indigo\\Purpur}",HR,24)
{
ring(,,H,,5,0){
vertex(,2){ 3: bond(r) atom("Br"); };
0: bond(r,=C,L) ring(,0,H,,5,r){
vertex(,2){ 3: bond(r) atom("Br"); };
1: atom("N") bond(r) atom("H");
4: bond(r,=C) atom("O");
};
1: atom("N") bond(r) atom("H");
4: bond(r,=C) atom("O");
}
}
\end{chemistry}
\begin{chemistry}
formula(L,R,"Carmins""aure",HR,24)
{ ring(,,H){
vertex(,1,4){ 0: bond(r,,Ln) atom("C",C,R) atom("OOH",L);
1: bond(r) atom("O",C,L) atom("H",R);
3: bond(r) atom("C",C,R) atom("H$_3$",L);
};
vertex(,4,1){ 0: bond(r) atom("O",C,R) atom("H",L);
3: bond(r) atom("O",C,R) atom("H",L);
4: bond(r) atom("CO(CHOH)$_4$CH$_3$",L);
5: bond(r) atom("O",C,R) atom("H",L);
};
0: bond(r,=C) atom("O");
3: bond(r,=C) atom("O");
}
}
\end{chemistry}
\end{document}
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