You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(2S,4aR,12aS)-5-methyl-8-[(2-methylphenyl)sulfonylamino]-6-oxo-2,3,4,4a,12,12a-hexahydropyrano[2,3-c][1,5]benzoxazocin-2-yl]-N-propylacetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H33N3O6S
assistant