21
charge = 0
 C 1.253299 -0.111459 -0.226985
 C 2.734587 0.143794 -0.019635
 C 3.100973 1.042733 1.129127
 C 2.191489 1.592017 1.929710
 C 4.574059 1.311132 1.353445
 C 5.351624 0.040523 1.692429
 C 5.218611 2.038370 0.174605
 H 1.097262 -0.772758 -1.081932
 H 0.710372 0.816494 -0.420827
 H 0.802586 -0.586433 0.647484
 H 3.158283 0.564813 -0.939319
 H 3.248990 -0.815697 0.112107
 H 1.128782 1.425108 1.802859
 H 2.488096 2.236599 2.750597
 H 4.635815 1.975400 2.222378
 H 5.393509 -0.645453 0.842440
 H 4.897965 -0.488827 2.533365
 H 6.381777 0.286622 1.962308
 H 5.256159 1.407052 -0.716920
 H 6.246699 2.318614 0.417747
 H 4.669543 2.948464 -0.077263