You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule [(2R,3S)-6-oxo-2-[(2S,3R)-3-phenyloxiran-2-yl]-2,3-dihydropyran-3-yl] (E)-3-phenylprop-2-enoate .
user
C22H18O5
assistant