TeXで描く構造式

$\Dtrigonal{0==N$^+$;1D==O;2==O$^-$;3==$^-$O}\qquad\raisebox{9mm}{\llongleftrightarrow}\qquad\Dtrigonal{0==N$^+$;1==O$^-$;2==O$^-$;3D==O}\qquad\raisebox{9mm}{\llongleftrightarrow}\qquad\Dtrigonal{0==N$^+$;1==O$^-$;2D==O;3==$^-$O}\put(-150,0){\put(-3180,170){\tikz\draw[very thick, blue, -stealth](0,0) .. controls(0.1,0.6) and (0.4,0.6) .. (0.65,0.15);}\put(-3000,390){\tikz\draw[very thick, blue, -stealth](0,0) .. controls(-0.4,0.1) and (-0.4,0.5) .. (0.1,0.6);}}\put(-60,10){\put(-1470,175){\tikz\draw[very thick, blue, -stealth](0.65,0) .. controls(0.5,0.6) and (0.3,0.6) .. (0.1,0.15);}\put(-1920,120){\tikz\draw[very thick, blue, -stealth](0.65,0) .. controls(0.3,0.6) and (0.2,0.3) .. (0.1,-0.4);}}\\\spc$

\Dtrigonal{0==N$^+$;1D==O;2==O$^-$;3==$^-$O}\qquad\raisebox{9mm}{\llongleftrightarrow}\qquad\Dtrigonal{0==N$^+$;1==O$^-$;2==O$^-$;3D==O}\qquad\raisebox{9mm}{\llongleftrightarrow}\qquad\Dtrigonal{0==N$^+$;1==O$^-$;2D==O;3==$^-$O}
\put(0,0){
\put(-3180,170){\tikz\draw[very thick, blue, -stealth](0,0) .. controls(0.1,0.6) and (0.4,0.6) .. (0.65,0.15);}
\put(-3000,390){\tikz\draw[very thick, blue, -stealth](0,0) .. controls(-0.4,0.1) and (-0.4,0.5) .. (0.1,0.6);}
}
\put(0,0){
\put(-1470,175){\tikz\draw[very thick, blue, -stealth](0.65,0) .. controls(0.5,0.6) and (0.3,0.6) .. (0.1,0.15);}
\put(-1890,140){\tikz\draw[very thick, blue, -stealth](0.65,0) .. controls(0.3,0.6) and (0.2,0.3) .. (0.1,-0.4);}
}