C4H2O7P
APtclcactv03241713342D 0   0.00000     0.00000
 
 14 13  0  0  0  0  0  0  0  0999 V2000
    5.4641   -1.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.4641    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    6.3301    0.5000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    7.1962   -0.0000    0.0000 O   0  5  0  0  0  0  0  0  0  0  0  0
    6.3301    1.5000    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    4.5981    0.5000    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    3.7321    0.0000    0.0000 P   0  0  0  0  0  0  0  0  0  0  0  0
    4.2321   -0.8660    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    2.8660   -0.5000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.8660   -1.5000    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    2.0000   -0.0000    0.0000 O   0  5  0  0  0  0  0  0  0  0  0  0
    3.2321    0.8660    0.0000 O   0  5  0  0  0  0  0  0  0  0  0  0
    4.9272   -1.3100    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
    6.0010   -1.3100    0.0000 H   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  2  0  0  0  0
  2  3  1  0  0  0  0
  3  4  1  0  0  0  0
  3  5  2  0  0  0  0
  2  6  1  0  0  0  0
  6  7  1  0  0  0  0
  7  8  2  0  0  0  0
  7  9  1  0  0  0  0
  9 10  2  0  0  0  0
  9 11  1  0  0  0  0
  7 12  1  0  0  0  0
  1 13  1  0  0  0  0
  1 14  1  0  0  0  0
M  CHG  3   4  -1  11  -1  12  -1
M  END
> <UNIQUE_SMILES>
[O-]C(=O)C(=C)O[P]([O-])(=O)C([O-])=O

> <USER_SUPPLIED_SMILES>
C=C(C([O-])=O)OP(=O)(C(=O)[O-])[O-]

$$$$
