第109回薬剤師国家試験

$\spc\\\text{\sffamily\bfseries (CH$\bf_3$)$\bf_4$C}\qquad\tetrahedral{1==;2==;3==;4==}\qquad\tetrahedral{1==CH$\bf_3$;2==H$\bf_3$C;3==CH$\bf_3$;4==CH$\bf_3$}\\\\\trimethylene{}{2Sd==;2Su==}\qquad\DtetrahedralS{0==C;1==CH$\bf_3$;2==H$\bf_3$C;3A==CH$\bf_3$;4B==CH$\bf_3$}\qquad\dtetrahedralS{0==C;1==CH$\bf_3$;2==CH$\bf_3$;3A==H$\bf_3$C;4B==H$\bf_3$C}$

2,2-ジメチルプロパン