You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: The molecule is anti viral.
user
NC(=O)c1ncn(C2OC(COC(=O)OCCCOC3OC(CO)C(O)C(O)C3O)C(O)C2O)n1
assistant