You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-(2,3,4,4a,5,6,7,7a-octahydrocyclopenta[b]pyridin-1-yl)-4-methyl-1,3-thiazol-5-yl]-N-methylmethanamine is the IUPAC name of a molecule. Please give its molecular formula.
user
C14H23N3S
assistant