CYN
  Converted by convert_cif2sdf.py  2026/01/30 11:05:38

  2  1  0  0  0  0  0  0  0  0999 V2000
    0.5675    0.0000   -0.0435 C   0  5  0  0  0
   -0.5675    0.0000   -0.0435 N   0  0  0  0  0
  1  2  3  0  0  0
M  END
$$$$