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 based on this description: The molecule is a phosphorescent emitter and organic electroluminescent device, belonging to both the electroluminescent and phosphorescent classes of molecules.
user
O=c1[nH]cc(-c2ccc3c(c2)c2ccccc2n3-c2ccccc2)c2[nH]c3cccc(-c4ccc5c(c4)c4ccccc4n5-c4ccccc4)c3c12
assistant