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 [(6Z,9Z)-20-(1,3-dihydroxyheptadecan-2-ylamino)-20-oxoicosa-6,9-dienyl] (Z)-icos-11-enoate .
user
C57H107NO5
assistant