You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 6-(6-ethoxy-6-oxohexoxy)-5-[(2R,3R,4R,5R,6S)-6-methyl-3,4,5-tris(phenylmethoxy)oxan-2-yl]naphthalene-2-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C47H52O9
assistant