You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: The molecule is anti tumor.
user
O=C1N=C(c2ccccc2)C(S(=O)(=O)c2ccc3c(c2)CCN3C(=O)c2ccccc2)=N1
assistant