\tetramethylene{1==H$\bf_3$C;4==CO$\bf_2$H}{3Sd==H;3Su==NH$\bf_2$}
\qquad
\tetramethylene{1==H$\bf_3$C;4==CO$\bf_2$H}{3Sd==NH$\bf_2$;3Su==H}
\put(-1550,-180){\sffamily\bfseries A}
\put(-400,-180){\sffamily\bfseries B}
\bornane{3Sb==OH\put(-325,-175){\exosinglebond{0}\put(-45,-95){H}}}
\qquad
\bornane{3Sb==H\put(-240,-175){\exosinglebond{0}\put(-45,-95){OH}}}
\put(-1850,-180){\sffamily\bfseries A}
\put(-600,-180){\sffamily\bfseries B}
\bornane{7Sa==H;7Sb==CH$\bf_3$}
\qquad
\bornane{7Sa==CH$\bf_3$;7Sb==H}
\put(-1850,80){\sffamily\bfseries A}
\put(-600,80){\sffamily\bfseries B}
\frontthicktothintrue
\bornane[]{3Sb==OH\put(-305,-180){\exosinglebond{0}\put(-35,-90){H}}}
\textcolor{white}{\PutBondLine(-508,490)(-508,700){10pt}}
\PutBondLine(-490,480)(-490,680){0.8pt}
\PutBondLine(-563,685)(-490,680){0.8pt}
\qquad
\frontthicktothintrue
\bornane[]{3Sb==H\put(-228,-180){\exosinglebond{0}\put(-35,-90){OH}}}
\textcolor{white}{\PutBondLine(-508,490)(-508,700){10pt}}
\PutBondLine(-490,480)(-490,680){0.8pt}
\PutBondLine(-563,685)(-490,680){0.8pt}
\put(-1800,-180){\sffamily\bfseries A}
\put(-600,-180){\sffamily\bfseries B}
\xFiveCycle(0,0){18}[]{2s==\PutAtomRotatedRa(115,-180){-18}{\sffamily\bfseries CO$\bf_2$CH$\bf_3$};2s==\WedgeAsSubstX(0,0)(80,-120)[10];3s==\PutAtomRotatedRa(200,60){-18}{\sffamily\bfseries CH$\bf_3$};3s==\WedgeAsSubstX(0,0)(140,50)[10]}
\put(1100,100){
\xFiveCycle(0,0){18}[]{2s==\PutAtomRotatedRa(115,-180){-18}{\sffamily\bfseries CO$\bf_2$CH$\bf_3$};2s==\WedgeAsSubstX(0,0)(80,-120)[10];1s==\PutAtomRotatedRa(-250,-130){-18}{\sffamily\bfseries H$\bf_3$C};1s==\WedgeAsSubstX(0,0)(-90,-120)[10]}
\hspace{1cm}\spc}
\put(150,-250){\sffamily\bfseries A}
\put(1250,-250){\sffamily\bfseries B}