You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 6-[2-[4-[4-[(3S)-2-(3-chloro-4-isocyanophenyl)-3-methyl-2,8-diazaspiro[4.5]decane-8-carbonyl]phenyl]piperazin-1-yl]acetyl]-2-(2,6-dioxopiperidin-3-yl)-5,7-dihydropyrrolo[3,4-f]isoindole-1,3-dione by IUPAC nomenclature, provide its molecular formula.
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C44H45ClN8O6
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