You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name methane;methyl (Z)-7-[(1R,3R)-2-[(E)-3-aminooxy-4-(1-benzothiophen-2-yl)but-1-enyl]-3-ethyl-5-oxocyclopentyl]hept-5-enoate into its molecular formula.
user
C28H39NO4S
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