You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 2-[4-(3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-2-ylmethyl)phenyl]-N-ethylpropan-1-amine .
user
C19H30N2
assistant