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 organic electroluminescent device and belongs to the electroluminescent class of molecules, with the characteristic of being phosphorescent.
user
CC1(C)c2ccccc2-c2ccc(N(c3cccc(-n4c5ccccc5c5cc(-c6ccccc6)ccc54)c3)c3cccc4c3-c3ccccc3C43c4ccccc4-c4ccc(-c5ccccc5)cc43)cc21
assistant