You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named [(1S,2R,3R,4S,5S,6S,8R,10R,13S,16S,17R)-11-ethyl-4,16-dihydroxy-6,18-dimethoxy-13-(methoxymethyl)-11-azahexacyclo[7.7.2.12,5.01,10.03,8.013,17]nonadecan-8-yl] benzoate is given. What is its corresponding molecular formula?
user
C31H43NO7
assistant