You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl (2S)-2-[[(2S)-2-[[(2S,3S)-3-methyl-2-[[(2R)-2-[(2-methylpropan-2-yl)oxycarbonylamino]-3-tritylsulfanylpropyl]amino]pentyl]amino]-3-phenylpropanoyl]amino]-4-methylsulfanylbutanoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C48H64N4O5S2
assistant