You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (1R,4R,4'S,7S,8R,11S,12R)-1,5,5,6',6',8',8',15,15,17,17-undecamethyl-4',12-bis(2-methylpropyl)spiro[19-oxatetracyclo[9.8.0.04,7.013,18]nonadec-13(18)-ene-8,2'-3,4-dihydrochromene]-5',7',14,16-tetrone into its molecular formula.
user
C45H68O6
assistant