ChatGPT constructed this call to API from within google sheets. Can you tell me what is wrong?

API
1

Hi,

ChatGPT crafted this code but I am getting an error trying to receive response from within AppsScript function:

function getImprovedTitle(text) {
  var apiKey = "MY API KEY";
  var assistantId = "MY-ASSITANT-ID";
  var data = {
    "messages": [
      {"role": "system", "content": "This is a system message to start the conversation."},
      {"role": "user", "content": text}
    ]
  };
  var options = {
    "method" : "post",
    "contentType": "application/json",
    "headers": {
      "Authorization": "Bearer " + apiKey
    },
    "payload": JSON.stringify(data),
    "muteHttpExceptions": true
  };

  try {
    var url = "(hypertext)api.openai(DOTCOM)/v1/assistants/" + assistantId + "/messages";
    var response = UrlFetchApp.fetch(url, options);
    var responseData = JSON.parse(response.getContentText());
    if (response.getResponseCode() == 200) {
      var messages = responseData.data.messages;
      var lastMessage = messages[messages.length - 1];
      return lastMessage.content; // Assuming the last message is the response from the assistant.
    } else {
      return "API request failed with response: " + response.getContentText(); // Show full error message
    }
  } catch (e) {
    Logger.log(e.toString());
    return "Error: Could not retrieve an improved title due to an exception: " + e.toString();
  }
}

The error I receive in response is the following:
“API request failed with response: {
““error””: {
““message””: ““Invalid URL (POST /v1/assistants/345345/messages)””,
““type””: ““invalid_request_error””,
““param””: null,
““code””: null
}
}”
Please note that var url = "(hypertext) /(DOTCOM) is deliberately changed because no links are allowed in chat.

Can you please tell me what is wrong with the call - ideally rewrite it ?

Thanks!