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 a anti tumour. Please represent the molecule in SMILES.
user
O=C(NC(=O)c1c(F)cccc1F)Nc1ccc(Oc2ccc(Cl)cc2)c(Cl)c1
assistant