You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-methoxy-3-[(2R,4R)-2-[(1-naphthalen-1-ylethylamino)methyl]-3,4-dihydro-2H-chromen-4-yl]benzoic acid;hydrochloride is the IUPAC name of a molecule. Please give its molecular formula.
user
C30H30ClNO4
assistant