You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (3aR,6S,7aR)-N-(furan-2-ylmethyl)-4-pyrimidin-2-yl-3,3a,5,6,7,7a-hexahydro-2H-furo[3,2-b]pyridine-6-carboxamide .
user
C17H20N4O3
assistant