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 light-emitting device.
user
CC1C=Cc2nc(-c3ccc4c(c3)=C(c3ccccc3)C3=CC=CCC3C=4c3ccc(-c4ccccc4)cc3)n(-c3ccccc3)c2C1
assistant