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What is the molecular formula of the molecule (1S,2R,9S,10R,13R,14S,17S,18S)-2,18-dimethyl-17-(trideuteriomethyl)-6,7-diazapentacyclo[11.7.0.02,10.04,8.014,18]icosa-4(8),5-diene-9,17-diol ?
user
C21H32N2O2
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