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 light-emitting member of the organic light-emitting device class. Use the above information to create a molecule.
user
c1ccc2c(c1)cc(-c1cc(-c3ccc4oc5ccccc5c4c3)cc(-c3ccc4oc5ccccc5c4c3)c1)c1ccc3ccc(-c4cc(-c5ccc6oc7ccccc7c6c5)cc(-c5ccc6oc7ccccc7c6c5)c4)cc3c12
assistant