You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4-nitrophenyl)methyl N-[(2S,3R)-6-(acetamidomethyl)-2-[(1R,2S,3S,4R,6S)-3-[(2R,3R,4R,5R)-3,5-dihydroxy-5-methyl-4-(methylamino)oxan-2-yl]oxy-2-hydroxy-4-[[(2S)-2-hydroxy-3-[(2-methylpropan-2-yl)oxycarbonylamino]propanoyl]amino]-6-[(4-nitrophenyl)methoxycarbonylamino]cyclohexyl]oxy-3,4-dihydro-2H-pyran-3-yl]carbamate is the IUPAC name of a molecule. Please give its molecular formula.
user
C45H62N8O20
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