You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (1R,8R)-10-oxo-11-phenylmethoxy-4-prop-2-enoxy-9,11-diazatricyclo[7.2.1.02,7]dodeca-2(7),3,5-triene-8-carboxylate into its molecular formula.
user
C21H19N2O5-
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