You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 2-[9-(5-oxo-6-phenyl-10H-benzo[h][1,6]naphthyridin-10-id-2-yl)xanthen-9-yl]-6-phenyl-10H-benzo[h][1,6]naphthyridin-10-id-5-one;platinum(2+) using the IUPAC nomenclature.
user
C49H28N4O3Pt
assistant