[H] N (C1 = C2C ([H]) = C ([H]) C (Cl) = C ([H]) C2 =数控([H]) = C1 [H]) [C@] ([H]) (C ([H]) ([H]) [H]) C ([H]) ([H]) C ([H]) ([H]) C ([H]) ([H])数控([H]) ([H]) C ([H]) ([H]) [H]

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