21 charge = 0 C 1.667965 1.088671 -0.702996 C 2.411530 0.494496 0.481746 C 3.881046 0.896088 0.569354 C 4.720203 0.401200 -0.581335 C 6.140094 0.854958 -0.754745 C 5.108666 1.238086 -1.773091 C 4.704727 2.675398 -1.943228 H 0.622241 0.772114 -0.712118 H 2.117258 0.780647 -1.649880 H 1.683237 2.181780 -0.669947 H 2.347105 -0.599373 0.440075 H 1.910380 0.789609 1.409776 H 3.959630 1.985523 0.652582 H 4.297678 0.494182 1.500288 H 4.549272 -0.648242 -0.810884 H 6.898230 0.125625 -1.013417 H 6.486641 1.642208 -0.092788 H 5.157865 0.687287 -2.708212 H 4.688354 3.209883 -0.991250 H 3.712139 2.765904 -2.392707 H 5.413358 3.196056 -2.593503