You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as (4R)-4,5-dimethyl-2-oxa-5-azatricyclo[6.3.1.04,12]dodeca-1(11),8(12),9-trien-6-one using the IUPAC nomenclature.
user
C12H13NO2
assistant