21

C 1.58897 -0.52263 -0.16057
C 0.29588 -0.58584 -0.51516
C -0.84110 -0.20758 0.39106
C -1.77873 -1.39145 0.63148
C -2.93639 -1.00755 1.54016
C 2.72613 -0.88412 -1.07200
C 3.55539 -2.02390 -0.50125
H 1.85776 -0.18094 0.83721
H 0.02747 -0.91587 -1.51692
H -1.39571 0.61600 -0.07433
H -0.46473 0.16502 1.35157
H -1.22572 -2.22261 1.08614
H -2.17866 -1.75522 -0.32310
H -2.57373 -0.67373 2.51731
H -3.59537 -1.86680 1.69772
H -3.52979 -0.20049 1.09919
H 3.36318 -0.00263 -1.20566
H 2.35935 -1.16784 -2.06516
H 3.98125 -1.75644 0.47207
H 4.38314 -2.26400 -1.17650
H 2.95043 -2.92799 -0.37204