You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[(5R,6aS,7R,10aS,10bS)-7-(methoxymethyl)-6a,7-dimethyl-2-oxo-4,5,6,8,9,10,10a,10b,11,12-decahydro-3H-chrysen-5-yl]benzaldehyde is the IUPAC name of a molecule. Please give its molecular formula.
user
C29H36O3
assistant