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 sting agonist. Please represent the molecule in SMILES.
user
Cc1nc(C)c(C(=O)Nc2nc3cc(C(N)=O)cc(CN4CCOCC4)c3n2CC=CCN)o1
assistant