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 methyl (4R,5R,7R)-3-benzyl-4-deuterio-5-(3-methoxy-3-oxopropyl)-2,4,5,6,7,8-hexahydro-1H-azonino[5,4-b]indole-7-carboxylate .
user
C27H32N2O4
assistant