You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 2,2-dimethylpropyl N-[(5S,5aS,6R,6aS,7R,10aR)-9-carbamoyl-7-(dimethylamino)-6,10a-dihydroxy-5-methyl-8,10,11,12-tetraoxo-5,5a,6,6a,7,11a-hexahydrotetracen-2-yl]carbamate .
user
C28H35N3O9
assistant