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 high luminous efficiency class of molecules.
user
Cc1cc(-c2ccc(C#N)cc2)cc(C)c1-c1ccc2c3c(cccc13)-c1cc3c(cc1-2)c(-c1ccc(C#N)cc1)cc1c2ccccc2c(-c2ccc(C#N)cc2)cc31
assistant