You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(2R,3R,4R,5R,6R)-3,5-dihydroxy-2-(hydroxymethyl)-6-[(E,2R,3S)-3-hydroxy-2-(octadecanoylamino)octadec-4-enoxy]oxan-4-yl]acetic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C44H83NO9
assistant