You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 9-(4,6-diphenyl-1,2-dihydropyrimidin-2-yl)-2-phenyl-2,3-dihydronaphtho[2,1-g][1,3]benzoxazol-1-ium ?
user
C37H28N3O+
assistant