You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl (3aR,5S,6S,7S,7aR)-6-[(2R,3R,4R,5S,6R)-6-(acetyloxymethyl)-3-azido-4,5-bis(phenylmethoxy)oxan-2-yl]oxy-2,2-dimethyl-7-phenylmethoxy-5,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-b]pyran-5-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C39H45N3O12
assistant