You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name ethyl 2,3,6-trichloro-5-[[(E)-3-hydroxy-2-methoxycarbonylbut-2-enylidene]amino]benzoate ?
user
C15H14Cl3NO5
assistant