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
CC1(C)c2ccccc2-c2ccc(-c3cc4ccccc4c4c3ccc3c5ccccc5sc34)cc21
assistant