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. Please represent the molecule in SMILES.
user
C=NCc1cc(C#N)cc(C#N)c1-c1c(-c2ccc(-n3c4ccccc4c4cc(F)ccc43)cn2)c(-c2c(C#N)cc(C#N)cc2C=NC)c(-c2c(C#N)cc(C#N)cc2C#N)c2c1sc1ccccc12
assistant