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 9-thia-11,17-diazatetracyclo[8.8.0.02,8.013,17]octadeca-1(10),2(8),11,13,15-pentaen-18-one using the IUPAC nomenclature.
user
C15H14N2OS
assistant