You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
The molecule is a organic light-emitting device. Use the above information to create a molecule.
user
c1ccc(-c2nc(-c3ccccc3)nc(-c3c4ccccc4c(-c4cccc5c4oc4cccc(-c6c7ccccc7c(-c7ccccc7)c7ccccc67)c45)c4ccccc34)n2)cc1
assistant