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 (2S)-2-[(3aR,7aR)-1,3-dioxo-3a,4,7,7a-tetrahydroisoindol-2-yl]-N-[(2R)-2-(2-methoxyphenyl)-2-piperidin-1-ylethyl]-4-methylpentanamide ?
user
C28H39N3O4
assistant