curl --request POST \
  --url https://api.anysite.io/api/pubchem/substances \
  --header 'Content-Type: application/json' \
  --header 'access-token: <api-key>' \
  --data '
{
  "substance": "<string>",
  "timeout": 300
}
'

[
  {
    "id": 123,
    "url": "<string>",
    "@type": "@pubchem_substance",
    "source_name": "<string>",
    "source_id": "<string>",
    "cid": 123,
    "synonyms": [],
    "deposit_url": "<string>",
    "source_url": "<string>"
  }
]