You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1S,3R,9R,10R)-15-benzyl-12-(4-hydroxybutyl)-7-phenyl-2-oxa-7,12,15-triazatetracyclo[8.8.0.01,13.03,9]octadeca-4,17-diene-8,11,14-trione is the IUPAC name of a molecule. Please give its molecular formula.
user
C31H33N3O5
assistant