You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: The molecule is a organic light-emitting diode that has an effect on delayed fluorescence. Please represent the molecule in SMILES.
user
Cc1c(-c2ccccc2)c(-c2ccccc2)c(C#N)c(-c2ccccc2)c1-c1ccccc1
assistant