none
     RDKit          3D

  3  2  0  0  0  0  0  0  0  0999 V2000
    3.4544    3.4527    0.1558 O   0  0  0  0  0  0  0  0  0  0  0  0
    3.4424    2.5206   -0.1087 H   0  0  0  0  0  0  0  0  0  0  0  0
    2.5260    3.6536    0.3473 H   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0
  1  3  1  0
M  END