You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (1S,9S,10S)-4-(2-deuteriopropan-2-yloxy)-17-(trideuteriomethyl)-17-azatetracyclo[7.5.3.01,10.02,7]heptadeca-2(7),3,5-triene into its molecular formula.
user
C20H29NO
assistant