How to make a custom death message with the player's name

Hi! I am working on a mod, and have a death message called "death.attack.telepod" and the message being "was ripped apart at a molecular level." I need the players name to be at the front, like "eagle_skull14 was ripped apart at a molecular level." or "Dev was ripped apart at a molecular level." How do I do add the killed player's name? Thank you!