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 tumor. Please represent the molecule in SMILES.
user
CC(=O)OCCCCCc1nc2c(=O)n(C)c(=O)n(CC(C)C)c2nc1COc1ccc(Cl)cc1Br
assistant