You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: The molecule is a cancer treatment. Please write the SMILES representation of it.
user
O=P(O)(O)COCC1OC(n2ncc3c(NC4CCOCC4)nc(Cl)nc32)C(O)C1O
assistant