[
  {
    "id": "eau",
    "name": "eau",
    "description": "blabla 1",
    "compo": [
      {
        "atom_id": "hydrogene",
        "nbr": 2
      },
      {
        "atom_id": "oxygene",
        "nbr": 1
      }
    ]
  },
  {
    "id": "dioxyde_carbone",
    "name": "Dioxyde de carbone",
    "description": "blabla 2",
    "compo": [
      {
        "atom_id": "carbone",
        "nbr": 1
      },
      {
        "atom_id": "oxygene",
        "nbr": 2
      },
    ]
  }
]