You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-[(1S,4aR,8aS)-4a-hydroxy-1-(2-methoxyphenyl)-1,3,4,5,6,7,8,8a-octahydroisoquinolin-2-yl]-N-butylacetamide into molecular formula.
user
C22H34N2O3
assistant