You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance methyl 6-[4-(imidazo[1,2-a]pyridin-2-ylmethyl)piperazin-1-yl]-2-methoxypyridine-3-carboxylate .
user
C20H23N5O3
assistant