MMC
  -OEChem-04192423163D

  5  4  0     0  0  0  0  0  0999 V2000
    0.0000    0.0000   -0.1510 Hg  0  3  0  0  0  0  0  0  0  0  0  0
    0.0000    0.0000    1.9480 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.0090    1.0270    2.3110 H   0  0  0  0  0  0  0  0  0  0  0  0
   -0.8850   -0.5220    2.3110 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.8940   -0.5050    2.3110 H   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0  0  0  0
  2  3  1  0  0  0  0
  2  4  1  0  0  0  0
  2  5  1  0  0  0  0
M  CHG  1   1   1
M  END
> <OPENEYE_ISO_SMILES>
C[Hg+]

> <OPENEYE_INCHI>
InChI=1S/CH3.Hg/h1H3;/q;+1

> <OPENEYE_INCHIKEY>
DBUXSCUEGJMZAE-UHFFFAOYSA-N

> <FORMULA>
CH3Hg+

$$$$