You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule methyl (13S,14R,15R)-14-(4-bromobenzoyl)-14-ethyl-12-oxo-11-oxatetracyclo[8.5.0.02,7.013,15]pentadeca-1(10),2,4,6,8-pentaene-13-carboxylate into molecular formula.
user
C25H19BrO5
assistant