imported part modification

hello freinds i have an imported part which have an impression ( photo labeled 1) which i must to rotate it equally around an axix to get finally the part in the photo labeled 2
who can help me ?
thank you
3 Answers

Here is the part you need. I have Solidworks 2016. I am not sure if you can use the file. I have attached the step and the screenshot of the final part and the feature tree.