You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(2,3,4,4a,5,6,7,7a-octahydrocyclopenta[b]pyridin-1-yl)-N-(3-amino-2-methylphenyl)acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H25N3O
assistant