You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-[(3Z,6Z,9Z,12Z,15Z)-octadeca-3,6,9,12,15-pentaenoyl]oxy-3-[(6Z,9Z,12Z,15Z)-octadeca-6,9,12,15-tetraenoxy]propyl] (11Z,14Z,17Z)-icosa-11,14,17-trienoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C59H92O5
assistant