You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl (E)-3-[(2R,4aR,6S,7R,8aS)-7-hydroxy-6-methyl-2-phenyl-4a,7,8,8a-tetrahydro-4H-pyrano[3,2-d][1,3]dioxin-6-yl]prop-2-enoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H22O6
assistant