You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Based on the given information, generate a molecule that meets the desired specifications: It belongs to the organic light-emitting device class of molecules.
user
c1ccc(-c2ccc(N(c3ccccc3)c3ccc(-c4c5c(c(N(c6ccccc6)c6ccc(-c7ccccc7)cc6)c6ccccc46)Oc4ccccc4O5)cc3)cc2)cc1
assistant