You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(1S)-3-[4-[[(6aS)-2-methoxy-6,12-dioxo-5,6a,7,8,9,10-hexahydropyrido[2,1-c][1,4]benzodiazepin-3-yl]oxy]butanoyl]-1-(chloromethyl)-1,2-dihydrobenzo[e]indol-5-yl] 4-methylpiperazine-1-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C37H42ClN5O7
assistant