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 3-[(2R)-4-[(2E,4E,6E,8E,10E)-1-hydroxydodeca-2,4,6,8,10-pentaenylidene]-3,5-dioxopyrrolidin-2-yl]propanoic acid ?
user
C19H21NO5
assistant