You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 4-(1-methylbenzimidazol-2-yl)-1,2,5-oxadiazol-3-amine;(2Z,4Z)-3-methyl-6-methylideneocta-2,4-diene by IUPAC nomenclature, provide its molecular formula.
user
C20H25N5O
assistant