You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1R,9S,10S,14S)-3-bromo-14-hydroxy-13-[(4-methylphenyl)methyl]-2,8,11,13-tetrazatetracyclo[7.6.0.02,6.010,14]pentadeca-3,5-diene-7,12-dione;(1R,9S,10S,14R)-14-hydroxy-13-oxa-2,8,11-triazatetracyclo[7.6.0.02,6.010,14]pentadeca-3,5-diene-7,12-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C30H30BrN7O7
assistant