You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Come up with a molecule based on the description: It belongs to the organic light-emitting device class of molecules.
user
C1=CC(c2ccc3cc(-c4ccc5ccc(-c6ccc7ccc(-c8ccc9ccc%10cccc%11ccc8c9c%10%11)cc7n6)cc5n4)ccc3c2)Nc2c1ccc1cccnc21
assistant