You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by [(2S)-1-hydroxy-3-[(9Z,12Z,15Z)-octadeca-9,12,15-trienoyl]oxypropan-2-yl] (5Z,8Z,11Z,14Z)-icosa-5,8,11,14-tetraenoate ?
user
C41H66O5
assistant