You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Can you create a molecule that matches the given characteristics? The molecule is a organic light-emitting device.
user
c1ccc(-c2nc3ccccc3c3c(-c4ccc(-c5nc(-c6ccc7ccccc7c6)nc(-c6ccc7ccccc7c6)n5)cc4)cccc23)cc1
assistant