You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
dimethyl (12R)-12-(1,3-benzodioxol-5-yl)-8-methylidene-13-oxa-1-azatricyclo[7.3.1.02,7]trideca-2,4,6-triene-11,11-dicarboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H21NO7
assistant