You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule methyl (2S)-2-[[4-(4-methoxyphenyl)-1,4,6,7-tetrahydroimidazo[4,5-c]pyridine-5-carbonyl]amino]-3-methylbutanoate into molecular formula.
user
C20H26N4O4
assistant