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 electroluminescent, and it impacts electron transport.
user
CC(C)(C)c1ccc(-c2c3c(c(-c4ccc(C(C)(C)C)cc4)c4cc(-n5c(-c6ccccc6)ccc5-c5ccccc5)ccc24)=CCC(n2c(-c4ccccc4)ccc2-c2ccccc2)C=3)cc1
assistant