You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[[2-[bis[2-oxo-2-[2-[(2R,3S,4R,5S,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxyethylamino]ethyl]amino]acetyl]amino]-N-ethylacetamide by IUPAC nomenclature, provide its molecular formula.
user
C26H47N5O14
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