You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (2R)-4-amino-8-[8-(2,3-dichlorophenyl)-7-methyl-[1,2,4]triazolo[4,3-c]pyrimidin-5-yl]-8-azaspiro[4.5]decan-2-ol .
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C21H24Cl2N6O
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