You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 5-[5-phenyl-4-[[3-(trifluoromethoxy)phenyl]methylamino]phthalazin-1-yl]pyridine-3-sulfonamide .
user
C27H20F3N5O3S
assistant