You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule that fulfills the requirement: The molecule is a organic electroluminescent material, electronic device, and electroluminescent compound.
user
OCc1ccc2c(c1)oc1nc3ccc(-c4c5ccccc5c(-c5cccc6c5ccc5cc7ccccc7cc56)c5ccccc45)cc3cc12
assistant