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What is the molecular formula of the molecule identified by ethyl (1S,5R)-3-spiro[cyclopentane-3,9'-tricyclo[9.4.0.03,8]pentadeca-1(15),3,5,7,11,13-hexaene]-1-yl-3-azabicyclo[3.1.0]hexane-6-carboxylate ?
user
C27H31NO2
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