You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(1R,2S,4aS,5S,6R,8aS)-6-hydroxy-1-(hydroxymethyl)-1,4a-dimethyl-5-(2-morpholin-4-yl-2-oxoethyl)-2,3,4,5,6,7,8,8a-octahydronaphthalen-2-yl] N-(4-methylphenyl)carbamate is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H40N2O6
assistant