You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (4R,4aS,12bS)-4a,9-dihydroxy-3-(3,3,3-trifluoropropyl)-2,4,5,6,7a,13-hexahydro-1H-4,12-methanobenzofuro[3,2-e]isoquinolin-7-one ?
user
C19H20F3NO4
assistant