You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (4R)-4-hydroxy-4-prop-1-en-2-yl-7,8-dihydro-1H-pyrano[3,4-f]indolizine-3,6,10-trione .
user
C14H13NO5
assistant