O=C(O)P(=O)(O)O    mol31922    0_1
O=C([O-])P(=O)([O-])[O-]    mol31922    -3_1
O=C([O-])P(=O)(O)O    mol31922    -1_1
O=C(O)P(=O)([O-])O    mol31922    -1_2
O=C([O-])P(=O)([O-])O    mol31922    -2_1
O=C(O)P(=O)([O-])[O-]    mol31922    -2_2