You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[3-[1-[1-(2-aminoethyl)indol-4-yl]ethenylamino]-2-ethyl-3,4-dihydro-1H-2-benzoborinin-8-yl]ethenol is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H30BN3O
assistant