You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named ethyl 2-[(11R)-9-(hydroxymethyl)-6,15-dimethyl-11-(2-methylphenoxy)-9,15-diazatetracyclo[10.7.1.13,7.013,18]henicosa-1(19),3(21),4,6,12(20),13(18)-hexaen-2-yl]acetate is given. What is its corresponding molecular formula?
user
C33H40N2O4
assistant