You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-amino-N-(1,2,3,5,6,7,8,8a-octahydroindolizin-7-yl)-4-methylbenzenesulfonamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H23N3O2S
assistant