{
  "(=O)": 28999,
  "(C)": 29002,
  "(Cl)": 29011,
  "(F)": 29012,
  "(I)": 29008,
  "(O)": 29006,
  "(OC)": 29004,
  "([N+]([O-])=O)": 29010,
  "C#N": 29009,
  "N#C": 29005,
  "[C@@H]": 28997,
  "[C@H]": 29007,
  "[NH3+]": 28998,
  "[Na+]": 28996,
  "[O-]": 29001,
  "c1": 29003,
  "c2": 29000
}