You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: The molecule is a organic light-emitting device and belongs to the fluorescent class of molecules.
user
c1ccc(-c2nc(-c3ccccc3)nc(-c3cc(-c4c(-c5ccccc5)cccc4-c4ccccc4)cnc3-c3cccc4c3oc3c4ccc4c5ccccc5n(-c5ccccc5)c43)n2)cc1
assistant