You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (3R)-3-[(1R,3aR,4E,7aR)-4-(bromomethylidene)-7a-methyl-2,3,3a,5,6,7-hexahydro-1H-inden-1-yl]-N-[(3,5-diethoxyphenyl)methyl]butan-1-imine oxide into molecular formula.
user
C26H38BrNO3
assistant