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 2-[3-[[(2R,3S,6S)-3-hydroxy-2-[[(Z)-octadec-9-enoxy]methoxymethyl]-3,6-dihydro-2H-pyran-6-yl]oxy]propyl]guanidine .
user
C29H55N3O5
assistant