You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as (2S,3S,4R,5R)-5-(6-amino-2-ethynylpurin-9-yl)-N-ethyl-3,4-dihydroxyoxolane-2-carboxamide using the IUPAC nomenclature.
user
C14H16N6O4
assistant