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: It belongs to the cancer treatment class of molecules. Please represent the molecule in SMILES.
user
O=P(O)(O)C(COCc1nn[nH]n1)(Cc1nn[nH]n1)OCC1OC(n2ncc3c(NC4CCCC4)nc(Cl)nc32)C(O)C1O
assistant