You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named N-[[2-(2,3,4,4a,5,6,7,7a-octahydrocyclopenta[b]pyridin-1-yl)phenyl]methyl]ethanamine is given. What is its corresponding molecular formula?
user
C17H26N2
assistant