You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Give me a molecule that satisfies the conditions outlined in the description: The molecule is a organic light-emitting device that impacts luminous efficiency.
user
O=C1c2cc(-n3c4ccccc4c4ccccc43)ccc2-c2cc3c(=O)c4ccccc4oc3cc21
assistant