What is chemical post malone?

It seems like there may be some confusion here. There is no known chemical substance or compound with the name "Chemical Post Malone." It is possible that you are referring to the musician and rapper known as Post Malone.

Post Malone, whose real name is Austin Richard Post, is an American singer, rapper, and songwriter. He gained fame with his debut single "White Iverson" in 2015 and has since released several successful albums and singles. Post Malone is known for his unique blend of hip hop, rock, and pop music, as well as his distinctive vocal style and appearance.

If you have any other specific information or questions about Post Malone or any other topic, feel free to ask!