What is the molecular formula of the compound with this IUPAC name methyl (2S)-2-[[(2S,3S)-3-methyl-2-[[(2S)-2-[[(2S)-2-[(2-methylpropan-2-yl)oxycarbonylamino]-3-phenylpropyl]amino]-3-(4-prop-2-enoxyphenyl)propanoyl]amino]pentanoyl]amino]pent-4-enoate ?