You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(2R,3R,4R,5S,6R)-3-[[(2S)-2-amino-4-methylpentanoyl]amino]-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]-N-hexadecylhexadecanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C44H87N3O6
assistant