You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule N-(1-ethyl-2-hydroxyindol-3-yl)imino-4-methyl-2-phenylimidazo[1,2-a]benzimidazole-1-carboxamide ?
user
C27H22N6O2
assistant