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 2-tert-butyl-7-methyl-2-azaspiro[3.5]non-6-ene;2-tert-butyl-6-methyl-2,6-diazaspiro[3.3]heptane;3-tert-butyl-7-methyl-3,7-diazatricyclo[3.3.1.01,5]nonane;1-tert-butyl-5-methyl-4,6-dihydropyrrolo[3,4-c]pyrazole;2-tert-butyl-7-methyl-5-oxa-2,7-diazaspiro[3.5]nonan-6-one ?
user
C56H102N10O2
assistant