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 device and belongs to the delayed fluorescence class of molecules, with the characteristic of being fluorescent. Please represent the molecule in SMILES.
user
c1ccc(-c2cc(-c3ccccc3)nc(-c3cc(-c4ccccc4)c(-n4c5ccccc5c5c6oc7cc8c9ccccc9n(-c9ccccc9)c8cc7c6ccc54)c(-c4ccccc4)c3)n2)cc1
assistant