Under IUPAC nomenclature, a molecule named [(1S,2S,3R,4S,7R,9S,12R,15S)-15-[(2R,3S)-2-[butyl-[2-(pyridin-2-yldisulfanyl)ethyl]carbamoyl]oxy-3-[(2-methylpropan-2-yl)oxycarbonylamino]-3-phenylpropanoyl]oxy-1,4-dihydroxy-9,12-dimethoxy-10,14,17,17-tetramethyl-11-oxo-6-oxatetracyclo[11.3.1.03,10.04,7]heptadec-13-en-2-yl] benzoate is given. What is its corresponding molecular formula?