You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[1-(1,3-dihydroxypentadecan-2-ylamino)-1-oxoicosan-3-yl] (8Z,11Z,14Z)-icosa-8,11,14-trienoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C55H103NO5
assistant