\bornane[]{}
\textcolor{white}{\PutBondLine(-508,490)(-508,700){10pt}}
\PutBondLine(-490,480)(-490,680){0.8pt}
\PutBondLine(-563,685)(-490,680){0.8pt}
\PutBondLine(-490,480)(-350,650){0.8pt}
\PutBondLine(-563,680)(-700,850){0.8pt}
\PutBondLine(-563,680)(-770,600){0.8pt}
\put(-553,640){\color{white}{\scalebox{1.3}{$\text{■}$}}}\put(-530,650){\sffamily\bfseries O}