You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5R,7S)-5-amino-2,2-dioxo-2lambda6-thia-3,16-diazatricyclo[16.3.1.05,7]docosa-1(21),8,18(22),19-tetraene-4,17-dione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H25N3O4S
assistant