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 (2E,9bR)-6-acetyl-2-[1-[2-[[(1E)-1-[(9bR)-6-acetyl-7,9-dihydroxy-8,9b-dimethyl-1,3-dioxodibenzofuran-2-ylidene]ethyl]amino]ethylamino]ethylidene]-7,9-dihydroxy-8,9b-dimethyldibenzofuran-1,3-dione .
user
C38H36N2O12
assistant