Omättade derivat av estranerna, med metylgrupper vid kol 13, inget kol vid kol 10, och högst ett kol vid kol 17. De måste ha minst en dubbelbindning.

I'm happy to help you with that! However, I noticed that you used the term "estrener" in your question, which is not a medical term in English. If you meant to ask for the definition of "debut" or "present" a new medical treatment, drug, or device, then here it is:

To introduce or launch a new medical treatment, drug, or device is called "introduce," "launch," or "unveil" in medical terminology. This process involves conducting clinical trials and studies to prove the safety and efficacy of the new treatment, drug, or device before it can be made available to the public. Once approved by regulatory authorities such as the Food and Drug Administration (FDA) in the United States, the new treatment, drug, or device can be marketed and prescribed to patients.

If you meant something else by "estrener," please let me know, and I will do my best to provide a correct and helpful answer!