You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule N-[(1R,2S,4aR,7S,8S,8aS)-8-hydroxy-1,4a-dimethyl-7-[(2S)-1-morpholin-4-yl-1-oxopropan-2-yl]-2,3,4,5,6,7,8,8a-octahydro-1H-naphthalen-2-yl]-4-methoxybenzamide .
user
C27H40N2O5
assistant