\octamethylene[C] {2s==\WedgeAsSubstX(0,0)(180,-100)[10];8s==\dimethylene{1s==\put(0,2){\exodoublebond{-60}};2s==\dimethylene{2==CH$\bf_3$}{1==(yl)}}{1==(yl)}; 1s==\xFiveCycle(-33,18){31}[] {4s==\xFiveCycle(0,0){-36}[]{1s==\adddash(0,0)(-1,3){60};2s==\adddash(0,0)(1,3){60}; 4s==\rotatebox{0}{\sixfusev[b] {1s==\sixfusev[]{}{1==\rotatebox{5}{CO$\bf_2$H}}{D}[abc]} {}{c}[cdef]} }[abe]; 3s==\WedgeAsSubstX(0,0)(150,-115)[10]\put(135,-150){\rotatebox{-30}{H}}; 4s==\WedgeAsSubstX(0,0)(-150,115)[10]\put(-240,130){\rotatebox{-30}{H}} } [a] } {1Su==H;1Sd==HO;5SA==OH;5SB==H}