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 (2R,6R)-2,6-dibenzyl-4-hydroxy-N,N'-bis(2-hydroxy-2,3-dihydro-1H-inden-1-yl)heptanediamide .
user
C39H42N2O5
assistant