10

C 0.000000000 0.000000000 0.000000000
H 0.364514644 0.513239461 -0.888512354
H 0.364514644 0.513105641 0.888589641
H 0.364215723 -1.026226426 -0.000077278
H -1.089122980 0.000311014 0.000000023
C 4.461986413 0.000000000 0.000000000
H 5.551109392 -0.000311014 -0.000000023
H 4.097471768 -0.513105641 -0.888589641
H 4.097471768 -0.513239461 0.888512354
H 4.097770689 1.026226426 0.000077278
