You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-[(7,8-dimethoxy-1,3,4,5-tetrahydro-2-benzoxepin-1-yl)methoxy]ethyl]-4-[3-(trifluoromethyl)phenyl]piperidin-4-ol;chloride The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H34ClF3NO5-
assistant