You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-2-[[2-[(3S)-3-[[(2S)-2-amino-3-sulfanylpropanoyl]-methylamino]-2-oxo-5-phenyl-3H-1,4-benzodiazepin-1-yl]acetyl]amino]-4-methylsulfanylbutanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H31N5O5S2
assistant