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 2-O-tert-butyl 3-O-propyl (3S)-5-hydroxy-6-methoxy-3,4-dihydro-1H-isoquinoline-2,3-dicarboxylate ?
user
C19H27NO6
assistant