You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[3-(7-bicyclo[4.2.0]octa-1,3,5-trienyl)-1,2,4-oxadiazol-5-yl]-1-cyclopentylethanamine is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H21N3O
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