You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named (3S)-3-[[3-[(2S)-2-amino-3-hydroxybut-3-enyl]-7-octyl-1H-indol-4-yl]-methylamino]-4-methylpentan-2-one is given. What is its corresponding molecular formula?
user
C27H43N3O2
assistant