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=C1CCC(N2Cc3c(SCCCCCCCCN4CCNCC4)cccc3C2=O)C(=O)N1
assistant