オクタデシルシリル化シリカゲル
\tetrahedral{0==O;2=={\leftpolymer{}};
4==\tetrahedral{0==Si;1==O\put(-40,80){\exosinglebond{0}};2==(yl);3==O\put(-40,-20){\exosinglebond{180}};
4==\rightpolymer{O---\tetrahedral{0==Si;1==CH$\bf_3$;2==(yl);3==CH$\bf_3$;4==C$\bf_{18}$H$\bf_{37}$}}{n}
}
}
パラオキシ安息香酸 \sixheterov[ace]{2s==\trimethylene{3==OH}{1==(yl);2D==O}}{5==HO}[]