You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule N-[(2R,4aR,6R,7R,8R,8aS)-8-hydroxy-2-phenyl-7-(4,5,6,7-tetrachloro-1,3-dioxoisoindol-2-yl)-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-6-yl]-N-acetyl-3,5-dinitrobenzamide .
user
C30H20Cl4N4O12
assistant