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 [17-[[(E)-1,3-dihydroxynonacos-4-en-2-yl]amino]-17-oxoheptadecyl] (9Z,12Z)-heptadeca-9,12-dienoate .
user
C63H119NO5
assistant