You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-amino-4-[[(2S)-3-(3-hydroxy-4-methoxyphenyl)-1-methoxy-1-oxopropan-2-yl]amino]-4-oxobutanoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H20N2O7
assistant