You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 4-(2,3-dihydro-[1,4]dioxino[2,3-c]pyridin-7-ylmethylamino)-1-[2-(7-methoxy-2-oxoquinoxalin-1-yl)ethyl]piperidine-2-carboxylate;methyl 1-[2-(7-methoxy-2-oxoquinoxalin-1-yl)ethyl]-4-oxopiperidine-2-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C44H52N8O11
assistant