21
ethyne and pentane dimer. Min dist:4.23457256525cm distance: 4.5
C	 0.26916079  0.36482974  0.40212633
H	 0.74153135  1.00371873  1.10654569
C	-0.26956446 -0.36464435 -0.4020373 
H	-0.74112768 -1.00390412 -1.10663472
C	 4.90142266  4.58692563  1.98494227
H	 5.3167459   5.5950629   1.99419592
H	 5.73819568  3.88858191  1.97124791
H	 4.34583818  4.46016198  1.05680085
C	 4.02304611  4.35645483  3.2075395 
H	 3.59663535  3.35123244  3.17274156
H	 3.18026345  5.05098253  3.19428968
C	 4.7855331   4.53550125  4.51279226
H	 5.61501626  3.82297041  4.55075833
H	 5.2303376   5.53387651  4.5318217 
C	 3.90910409  4.35892378  5.74479834
H	 3.48123474  3.35373153  5.74324792
H	 3.06862346  5.05341679  5.6811892 
C	 4.67446759  4.59183075  7.04072022
H	 5.08907602  5.59996205  7.06670506
H	 4.03791367  4.46684834  7.91555412
H	 5.50654613  3.89353637  7.13065515
