You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (4aS,7aS)-6-[1-(2-ethoxyphenyl)ethyl]-1,2,3,4,4a,5,7,7a-octahydropyrrolo[3,4-b]pyridine .
user
C17H26N2O
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