HP4
  -OEChem-04262420153D

  5  4  0     0  0  0  0  0  0999 V2000
   20.1890   -0.5610   45.6080 P   0  0  0  0  0  0  0  0  0  0  0  0
   20.3080   -1.7110   46.5700 O   0  5  0  0  0  0  0  0  0  0  0  0
   19.9180   -0.9710   44.1680 O   0  0  0  0  0  0  0  0  0  0  0  0
   21.4050    0.1720   45.6400 H   0  0  0  0  0  0  0  0  0  0  0  0
   19.1230    0.2710   46.0410 H   0  0  0  0  0  0  0  0  0  0  0  0
  1  3  2  0  0  0  0
  1  2  1  0  0  0  0
  1  4  1  0  0  0  0
  1  5  1  0  0  0  0
M  CHG  1   2  -1
M  END
> <OPENEYE_ISO_SMILES>
[O-][PH2]=O

> <OPENEYE_INCHI>
InChI=1S/H3O2P/c1-3-2/h3H2,(H,1,2)/p-1

> <OPENEYE_INCHIKEY>
ACVYVLVWPXVTIT-UHFFFAOYSA-M

> <FORMULA>
H2O2P-

$$$$