You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
It belongs to the light-emitting class of molecules. Use the above information to create a molecule.
user
CC1(C)C2=CC(N(C3=CCC(c4ccc5ccccc5c4)C=C3)C3=CCCC=C3C3=CC(C4=Cc5c(n(-c6cccc7c6-c6ccccc6C7(C)C)c6ccccc56)CC4)=CCC3)CC=C2c2ccccc21
assistant