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: It belongs to the anti viral class of molecules.
user
CC1(O)C(O)C(CO)OC1n1cc(C(N)=O)c2c(N)ncnc21
assistant