const url = 'https://api.ouro.foundation/routes/mmoderwell/chemeleon/generate/composition';
const options = {
  method: 'POST',
  headers: {
    'Authorization': 'ApiKey {your-ouro-api-key}',
    'Content-Type': 'application/json'
  }
};
 
const payload = {
  "factor": 1,
  "n_samples": 4,
  "target_composition": "example_string"
};
options.body = JSON.stringify(payload);
 
fetch(url, options)
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.error('Error:', error));