You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: It belongs to the anti viral class of molecules.
user
CCOC(=O)C(C)NP(=O)(OCC1OC(C=NC)(c2ccc3c(N)ncnn23)C(OC(=O)C(C)C)C1OC(=O)C(C)C)Oc1cccc2ccccc12
assistant