You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S,3R,6R)-3-methyl-6-[(2S)-oxiran-2-yl]-2-[(E)-2-phenylethenyl]oxan-4-olate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H19O3-
assistant