You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 5-[[(4E,7E,10E,13E,16E,19E)-2-ethyldocosa-4,7,10,13,16,19-hexaenoyl]amino]-2-hydroxybenzoic acid ?
user
C31H41NO4
assistant