You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule based on this description: It belongs to the organic light-emitting device class of molecules.
user
CC1c2ccccc2C=CC1c1nc(-c2ccc(-c3ccc4ccccc4c3)cc2)nc(-c2ccc3ccccc3c2)n1
assistant