You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named dimethyl (E)-2-[[2-(3-chloro-4-methoxyphenyl)-1,3-benzoxazol-5-yl]amino]but-2-enedioate is given. What is its corresponding molecular formula?
user
C20H17ClN2O6
assistant