21
charge = 0
 C 1.752544 -0.789714 1.426716
 C 3.263023 -0.743246 1.269545
 C 3.796307 0.686430 1.191480
 C 5.291069 0.789421 1.062556
 C 5.867894 0.240635 -0.206451
 C 6.012487 1.344892 2.038295
 C 7.490267 1.533526 2.107529
 H 1.386487 -1.817452 1.483788
 H 1.253475 -0.305521 0.582404
 H 1.434296 -0.272592 2.336393
 H 3.551085 -1.297578 0.370569
 H 3.741476 -1.254169 2.112132
 H 3.473375 1.233884 2.082914
 H 3.324974 1.184723 0.332634
 H 5.348803 0.662199 -1.073943
 H 5.738451 -0.844725 -0.263608
 H 6.930435 0.451713 -0.316628
 H 5.464558 1.712651 2.904918
 H 8.012054 1.166972 1.223739
 H 7.906965 1.013373 2.976597
 H 7.742273 2.592059 2.230711