You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Give me a molecule that satisfies the conditions outlined in the description: The molecule is a phosphorescent and belongs to the phosphorescent emitter class of molecules.
user
O=c1c2ccccc2c2c3c(cc4nc(-c5ccccc5)n1c42)oc1ccccc13
assistant