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 2-propoxyethyl (6S)-6-(furan-2-yl)-3-methyl-4-oxo-1,5,6,7-tetrahydroindole-2-carboxylate .
user
C19H23NO5
assistant