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system
Provide the molecular formula for the IUPAC named substance (1S,14S)-17-hydroxy-7,7,18-trimethyl-2,8,21-trioxapentacyclo[12.8.0.03,12.04,9.015,20]docosa-3(12),4(9),5,10,15(20),16,18-heptaen-13-one .
user
C22H20O5
assistant