You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 2-[[3-(2-hydroxyethyl)-7-oxabicyclo[2.2.1]heptan-2-yl]methylsulfanyl]pentanoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H26O4S
assistant