You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3R,8R,9S,10R,13R,14S,17R)-3-hydroxy-10,13-dimethyl-17-[(2R)-6-methylheptan-2-yl]spiro[2,3,7,8,9,11,14,15,16,17-decahydro-1H-cyclopenta[a]phenanthrene-4,1'-cyclopropane]-12-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C29H46O2
assistant