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 class of molecules.
user
C=CC=CC=C(C)n1c(-c2ccc(-c3ccc(-c4ccc5ccc6c(-c7ccccc7)c7ccccc7nc6c5n4)cc3)cc2)nc2ccccc21
assistant