Gosh, hope that it could be removed. Frankly, I am a noob when it comes to detailing, and sanding on a clear coat paint sounds scary . But sanding, if done correctly, would not damage the car paint and clear coat right? Worried that the clear coat might be sanded until it's too thin haha.Thank you for your kind words.
The stain looks more like some season or aged tree sap stain. Given the center part is slight darker in tone than the outer ring. There is a high chance that sanding might not remove the damage also. But no harm trying. Tree sap stains usually have paint etching characteristic which mean the longer it stays the deeper it goes into the paint.
If it is safe, would pm one of the kind Sifus here and ask for their help