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: It belongs to the organic light-emitting device class of molecules.
user
c1ccc2c(c1)ccc1oc3c(-c4c5ccccc5c(-c5ccc6oc7ccccc7c6c5)c5ccccc45)c4c(cc3c12)oc1ccccc14
assistant