You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(2R,8S,11R,14R)-11-benzyl-8-[3-(diaminomethylideneamino)propyl]-3,6,9,12,15-pentaoxo-14-[4-[[6-[(2E)-2-[(2-sulfophenyl)methylidene]hydrazinyl]pyridine-3-carbonyl]amino]butyl]-1,4,7,10,13-pentazacyclopentadec-2-yl]acetic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C40H50N12O11S
assistant