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: The molecule is a organic light-emitting device.
user
Clc1cc2c(c(-c3nc(-c4ccccc4)nc(-c4ccccc4)n3)n1)C1C=c3ccccc3=CC1O2
assistant