You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
8-hydroxy-10a,12a-dimethyl-3,4,4a,4b,5,6,6a,7,8,9,10,10b,11,12-tetradecahydronaphtho[2,1-f]chromen-2-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H30O3
assistant