You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1S,3aS,3bS,5aR,9aR,9bS,11aS)-6,9a,11a-trimethyl-1-(quinolin-8-ylamino)-2,3,3a,3b,4,5,5a,9b,10,11-decahydro-1H-indeno[5,4-f]quinolin-7-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H35N3O
assistant