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
COC1Nc2c(ccc(C)c2O)C(=O)N2C=C(C=CC(N)=O)CC12
assistant