How to convert HTML to Jira Wiki format

[Test Account Jira]

Hi All,

I have setup OAuth 2.0 (3LO)  to sync all the issues from our application. I have get the html format for the description field but unable to convert my html to jira wiki format so that I can sync my issue description field to jira.

Please help me, I am stuck now

I have try multiple solution but none is working