You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2Z)-2-[2-hydroxy-1-[(2R,3R)-3-methyl-5-oxooxolan-2-yl]ethylidene]-4-methoxy-1-benzofuran-3-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H16O6
assistant