You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name 5-ethyl-2-[(4R)-4-hydroxyoxan-3-yl]-6-[[4-(1-methylpyrazol-3-yl)phenyl]methyl]-3H-isoindol-1-one ?
user
C26H29N3O3
assistant