You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 9H-fluoren-9-ylmethyl 2-hydroxyacetate;2-trimethylsilylethyl (E,3S)-3-[(2S)-2-(9H-fluoren-9-ylmethoxycarbonylamino)-3-(4-methylphenyl)propanoyl]oxy-7-octanoylsulfanylhept-4-enoate;2-trimethylsilylethyl (E,3S)-3-hydroxy-7-octanoylsulfanylhept-4-enoate into its molecular formula.
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C81H111NO14S2Si2
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