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 methyl (3R,5aR,8aS,8bR)-4-(hydroxymethyl)-3-[(Z)-4-(3-hydroxyphenyl)-3-pyridin-2-ylbut-3-enyl]-6,8-dioxo-1,3,5,5a,8a,8b-hexahydrofuro[3,4-e]isoindole-7-carboxylate ?
user
C28H28N2O7
assistant