You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (1S,10S,11S,15S)-3,3-dideuterio-15-methyltricyclo[8.7.0.011,15]heptadec-7-yne-2,5,14-trione into molecular formula.
user
C18H22O3
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