You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name N-[[(2R,3S,4R,5R,6S)-3,4-dihydroxy-6-methoxy-5-(4-phenylbutylamino)oxan-2-yl]methyl]-N-(4-phenylbutyl)octadecanamide ?
user
C45H74N2O5
assistant