You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(12S)-16-(diaminomethyl)-12-[2-hydroxy-5-[2-[2-hydroxy-5-[(E,9R)-9-[2-(methylamino)ethyl]-3-oxo-11-phenylundec-4-enyl]phenoxy]ethyl]phenyl]-6-azatricyclo[11.4.0.05,9]heptadeca-1(13),5(9),7,14,16-pentaen-2-yn-10-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C51H58N4O5
assistant