You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Based on the given information, generate a molecule that meets the desired specifications: It belongs to the light-emitting class of molecules.
user
C1=CC2N=C(c3ccccc3)N(c3nc(-n4c(-c5ccccc5)nc5ccccc54)nc(-n4c(-c5ccccc5)nc5ccccc54)n3)C2C=C1
assistant