You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-[(2S)-3-amino-1-(hydroxyamino)-3-methyl-1-oxobutan-2-yl]-4-[2-(4-hydroxycyclohexyl)ethynyl]benzamide .
user
C20H27N3O4
assistant