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 and belongs to the sting agonist class of molecules. Please write the SMILES representation of it.
user
Nc1nc2c(ncn2C2OC3(CO)COC3C2OP(=O)(O)OCC2OC(n3cnc4c(=O)[nH]cnc43)C(O)C2O)c(=O)[nH]1
assistant