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system
What is the molecular formula of the molecule identified by [(1R,9R,10S,12R,13S,14R,16S,18R)-13-ethyl-14-hydroxy-8,15-diazahexacyclo[14.2.1.01,9.02,7.010,15.012,17]nonadeca-2,4,6-trien-18-yl] acetate ?
user
C21H26N2O3
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