You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 4-[(3R)-5-(4-hydroxy-3-methoxyphenyl)-3-(2-hydroxyphenyl)-3,4-dihydropyrazol-2-yl]-4-oxobutanoic acid using the IUPAC nomenclature.
user
C20H20N2O6
assistant