You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-2-[(4S,4aS,5S,8aS)-2-(butylamino)-5-hydroxy-4,8a-dimethyl-4a,5,6,7,8,9-hexahydro-4H-benzo[f][1,3]benzothiazol-6-yl]-1-morpholin-4-ylpropan-1-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C24H39N3O3S
assistant