You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: The molecule is a phosphorescent and belongs to the phosphorescent emitter class of molecules.
user
Cc1ccc2c(n1)oc1c(-c3ncccc3-c3ccc(CC(C)C)cc3)c(C)ccc12
assistant