You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule N-[(2S)-5-(6-aminopurin-9-yl)-4-hydroxy-2-(hydroxymethyl)-2,3-dihydrofuran-3-yl]pyridine-3-carboxamide ?
user
C16H15N7O4
assistant