\xFiveCycle(0,0){180}[ce]{2==\hspace{-1mm}\text{ };2==\lmoiety{\sffamily\bfseries HN};4==\sffamily\bfseries N;<br>5s==\tetramethylenei{1==\raisebox{3mm}{\rotatebox{180}{$\bf_2$}}HN}{4==(yl)}<br>}[]
\xFiveCycle(0,0){180}[ce]{2==\hspace{-1mm}\text{ };2==\lmoiety{\sffamily\bfseries HN};4==\sffamily\bfseries N;<br>5s==\tetramethylenei{1==\raisebox{3mm}{\rotatebox{180}{$\bf_2$}}HN}{4==(yl)}<br>}[]