https://cactus.nci.nih.gov/chemical/structure/hydroxide%20ion/file?format=sdf...
__Jmol-14_07202312513D 1   1.00000     0.00000     0
Jmol version 14.29.29  2018-11-28 19:07 EXTRACT: ({0 1})
  2  1  0  0  0  0            999 V2000
   -0.8658    0.0945   -0.2628 H   0  0  0  0  0  0
    0.0545   -0.0060    0.0166 O   0  5  0  0  0  0
  1  2  1  0  0  0
M  END
