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 (5aR,10bS)-8,9-dichloro-1,2,3,4,5,5a,6,10b-octahydroazepino[4,5-b]indole using the IUPAC nomenclature.
user
C12H14Cl2N2
assistant