TeXで描く構造式

$\sixheteroh[]{2==O\rlap{H};1s==\sixheteroh[]{4s==\sixheteroh[]{6s==\sixheterov[b]{1==O}{6==(yl);2==CO$\bf_2$H;4SB==H;5Sd==H;6Su==H;4SA==\put(360,0){\RtetrahedralS{1==NH;2D==NH;3==NH$\bf_2$;1==(yl)}};5Su==\put(-280,-200){\RtetrahedralS{1==H$\bf_3$C;2D==O;3==HN;3==(yl)}}}[]}{2==(yl);1Sd==HO;1Su==H}[abcde]}{3==(yl);4SB==OH;4SA==H}[abcefg]}{}[bcde]\put(200,-200){$\scalebox{0.7}{$\bullet$}\ x\text{\sffamily\bfseries H$\bf_2$O}$}$

\sixheteroh[]{2==O\rlap{H};
1s==\sixheteroh[]{
4s==\sixheteroh[]{
6s==\sixheterov[b]{1==O}{6==(yl);2==CO$\bf_2$H;4SB==H;5Sd==H;6Su==H;
4SA==\put(340,0){\RtetrahedralS{1==NH;2D==NH;3==NH$\bf_2$;1==(yl)}};
5Su==\put(-260,-200){\RtetrahedralS{1==H$\bf_3$C;2D==O;3==HN;3==(yl)}}
}[]}
{2==(yl);1Sd==HO;1Su==H}[abcde]
}{3==(yl);4SB==OH;4SA==H}[abcefg]}
{}[bcde]
\put(200,-200){$\scalebox{0.7}{$\bullet$}\ x\text{\sffamily\bfseries H$\bf_2$O}$}