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 has an effect on luminous efficiency.
user
Clc1ccc(-c2ccc3c(c2)c2c4ccc(-c5cccc(N(c6ccccc6)c6ccc7c(c6)sc6ccccc67)c5)cc4n(-c4ccccc4)c2n3-c2ccccc2)cc1
assistant