You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[3-[(4aR,6R,8aS)-2-(cyclopropylmethyl)-6-[[2-(3,4-dichlorophenyl)acetyl]-methylamino]-8-hydroxy-1,3,4,5,6,7,8,8a-octahydroisoquinolin-4a-yl]phenyl] acetate is the IUPAC name of a molecule. Please give its molecular formula.
user
C30H36Cl2N2O4
assistant