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 methyl (1S,3S)-1-(2,3-difluorophenyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate using the IUPAC nomenclature.
user
C19H16F2N2O2
assistant