You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Give me a molecule that satisfies the conditions outlined in the description: This molecule is a member of the light-emitting class and influences luminous efficiency.
user
Brc1cc(-c2ccc(-c3cccnc3)cc2)cc(-c2cc(-c3ccc4sc5ccccc5c4c3)nc(-c3ccccc3)n2)c1
assistant