You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-[4-[carbamoyl(hydroxy)amino]but-1-ynyl]-2-[2-[4-[(R)-(4-chlorophenyl)-phenylmethyl]piperazin-1-yl]ethoxy]benzamide;dihydrochloride is the IUPAC name of a molecule. Please give its molecular formula.
user
C31H36Cl3N5O4
assistant