You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (1S,13R,17S)-12-oxa-18,25-diazahexacyclo[11.11.1.02,11.03,8.017,25.019,24]pentacosa-2(11),3,5,7,9,19,21,23-octaene into its molecular formula.
user
C22H20N2O
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