You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[3-[(2S,5S,8S,11S,14S,17S,20S,23S)-5,23-bis(4-aminobutyl)-8-[3-(diaminomethylideneamino)propyl]-11,17,20-tris(1H-indol-3-ylmethyl)-14-(2-methylpropyl)-3,6,9,12,15,18,21,24-octaoxo-1,4,7,10,13,16,19,22-octazacyclotetracos-2-yl]propyl]guanidine is the IUPAC name of a molecule. Please give its molecular formula.
user
C63H89N19O8
assistant