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What is the molecular formula of the compound with this IUPAC name (1R,2R,4S,5'R,6R,7S,8S,9S,12S,13S,16S,18S)-5',7,9,13-tetramethylspiro[5-oxapentacyclo[10.8.0.02,9.04,8.013,18]icosane-6,2'-piperidine]-16-ol ?
user
C27H45NO2
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