You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3S,6S,9S)-3-benzyl-6,7-dimethyl-9-(2-methylpropyl)-13-[2-(4-methylpyrimidin-2-yl)sulfanylacetyl]-1,4,7,10,13-pentazacyclopentadecane-2,5,8,11-tetrone is the IUPAC name of a molecule. Please give its molecular formula.
user
C30H41N7O5S
assistant