Under IUPAC nomenclature, a molecule named [(2R)-1-[hydroxy-[(2S)-2-hydroxy-3-[hydroxy-[(2R)-2-pentadecanoyloxy-3-tridecanoyloxypropoxy]phosphoryl]oxypropoxy]phosphoryl]oxy-3-octadecanoyloxypropan-2-yl] 18-methylnonadecanoate is given. What is its corresponding molecular formula?