You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[[4-(3,4a,5,6,7,7a-hexahydro-2H-cyclopenta[b][1,4]oxazin-4-ylmethyl)phenyl]methyl]ethanamine is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H26N2O
assistant