You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-[(7Z,10Z,13Z,16Z,19Z)-docosa-7,10,13,16,19-pentaenoyl]oxy-3-[(9Z,12Z)-octadeca-9,12-dienoyl]oxypropyl] (5Z,8Z,11Z,14Z,17Z,20Z,23Z)-hexacosa-5,8,11,14,17,20,23-heptaenoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C69H106O6
assistant