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 member of both the electroluminescent device and electroluminescent classes, known to affect electron transport and electron-transporting, and is characterized as phosphorescent.
user
CC1(C)c2ccccc2-c2cc3c4cc([Si](c5ccccc5)(c5ccccc5)c5ccccc5)ccc4n(-c4nc(-c5ccccc5)nc(-c5ccccc5)n4)c3cc21
assistant