You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl N-[2-[[(2R)-5-[[amino-[(2,2,4,6,7-pentamethyl-3H-1-benzofuran-5-yl)sulfonylamino]methylidene]amino]-2-[2-[3,6-diamino-5-[[(4S)-5-oxo-1-[[N'-[(2,2,4,6,7-pentamethyl-3H-1-benzofuran-5-yl)methyl]carbamimidoyl]amino]nonan-4-yl]carbamoyl]pyrazin-2-yl]-2-oxoethyl]pentanoyl]amino]ethyl]carbamate is the IUPAC name of a molecule. Please give its molecular formula.
user
C57H87N13O10S
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