You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Come up with a molecule based on the description: It belongs to the light-emitting class of molecules.
user
C1=CCC(c2nc(-c3ccccc3)cc(-c3ccc(-c4c(C5C=CC=CC5)n5nc(C6=CC7C=CC=CC7C=C6)c(-c6ccccc6)c5c5ccccc45)cc3)n2)C=C1
assistant