You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: The molecule is fluorescent. Please represent the molecule in SMILES.
user
O=C(O)c1ccc(-c2ccc(-c3ccc(-c4ccc(C(=O)O)cc4)cn3)nc2)cc1
assistant