You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 5-[3-[4-[[2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl]carbamoyl]quinolin-6-yl]oxypropylamino]-5-oxo-2-[4,7,10-tris(carboxymethyl)-1,4,7,10-tetrazacyclododec-1-yl]pentanoic acid .
user
C39H53N9O12
assistant