You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: It belongs to the delayed fluorescence, fluorescent, and organic light-emitting device classes of molecules. Please write the SMILES representation of it.
user
c1ccc(-c2ccc(-c3nc(-c4ccc(-c5ccccc5)cc4)nc(-c4cc(-c5ccccc5)c(-n5c6ccccc6c6ccc7c8ccccc8oc7c65)c(-c5ccccc5)c4)n3)cc2)cc1
assistant