You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-benzyl-12-chloro-4-hydroxy-2-oxatricyclo[7.3.1.05,13]trideca-1(12),5,7,9(13)-tetraene-10,11-dione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H13ClO4
assistant