You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (3aR,5aR,6R,9aR)-6-methyl-3a,4,5,5a,6,7,9,9a-octahydro-3H-[1,3]oxazolo[3,4-a]quinoline-1,8-dione by IUPAC nomenclature, provide its molecular formula.
user
C12H17NO3
assistant