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 identified by 2,9-diphenyl-4-(2-phenylphenyl)pyrimido[4,5-b]indole;4,9-diphenyl-2-(2-phenylphenyl)pyrimido[4,5-b]indole;2,9-diphenylpyrimido[4,5-b]indole;9-phenyl-4-(3-phenylphenyl)-2-(4-phenylphenyl)pyrimido[4,5-b]indole ?
user
C130H88N12
assistant