c:/temp/sym/json/allene.json
__Jmol-15_08012216143D 1   1.00000     0.00000     0
Jmol version 15.2.66  2021-02-10 09:12 EXTRACT: ({0:6})
  7  6  0  0  0  0            999 V2000
    0.0000    0.0000   -1.3714 C   0  0  0  0  0  0
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    0.0000    0.0000    0.0000 C   0  0  0  0  0  0
    0.0001    0.0000    1.3714 C   0  0  0  0  0  0
    0.0000   -0.8956   -1.8887 H   0  0  0  0  0  0
   -0.8956    0.0000    1.8887 H   0  0  0  0  0  0
    0.8956    0.0000    1.8887 H   0  0  0  0  0  0
  1  3  2  0  0  0
  1  2  1  0  0  0
  1  5  1  0  0  0
  4  3  2  0  0  0
  4  6  1  0  0  0
  4  7  1  0  0  0
M  END