TeXで描く構造式

$\spc\\\\\\\\\sixheterov[]{2==O;3s==\decaheterovt[bdj]{7==\put(-70,0){CH$\bf_3$};8==O;3s==\sixheterov[]{4==O;1s==\decaheterovb[cegj]{8==O;7s==\sixheterov[]{1s==\sixheterov[ace]{}{3==(yl)}[]}{5==(yl)}[abcdf]}{5==(yl);2D==O;3==CH$\bf_3$}[de]}{6==(yl)}[e]}{2==(yl)}[aefg]}{1Sd==H;1Su==\sixheteroh[ace]{}{6==(yl)}[]}[]$

\sixheterov[]{2==O;
3s==\decaheterovt[bdj]{7==\put(-70,0){CH$\bf_3$};8==O;
3s==\sixheterov[]{4==O;
1s==\decaheterovb[cegj]{8==O;
7s==\sixheterov[]{
1s==\sixheterov[ace]{}{3==(yl)}[]
}{5==(yl)}[abcdf]
}{5==(yl);2D==O;3==CH$\bf_3$}[de]
}{6==(yl)}[e]
}{2==(yl)}[aefg]
}{
1Sd==H;1Su==\sixheteroh[ace]{}{6==(yl)}[]
}
[]