You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: The molecule is a organic light-emitting device. Please write the SMILES representation of it.
user
O=P(c1ccccc1)(c1ccccc1)c1ccc2cc(-c3cc4c(c5ccccc35)Oc3cc5ccccc5cc3O4)ccc2c1
assistant