You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5S)-5-(5-bromo-2-methoxyphenyl)-N-[2-(2,6-dichlorophenyl)ethyl]-3-(2-ethoxyphenyl)-2,5-dihydro-1,2-oxazole-4-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H25BrCl2N2O4
assistant