Idea of Plesk Icon
The icon is a picture of the logo for Plesk. The icon looks like the shape of a flower pedal, but instead of pedals, imagine if there were circles on the outside of the center, unconnected to the center circle. there are 5 of these smaller circles on the outside, and a 6th circle which is connected to the inner circle, located on the top left of the icon.
This page shows the different variations of the Plesk from an Icons8 icon pack. Feel free to resize and recolor the icon, and then download the icon in PNG format for free.