You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-[(5Z,8Z,11Z)-icosa-5,8,11-trienoyl]oxy-3-[(10Z,12Z)-octadeca-10,12-dienoyl]oxypropyl] (7Z,10Z,13Z,16Z,19Z)-docosa-7,10,13,16,19-pentaenoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C63H102O6
assistant