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থায়োফিন এর গাঠনিক সংকেত কোনটি?

C H - C H ∥ ∥ H C C H \ / N

H_{2} C - C H_{2} ∥ ∥ H_{2} C C H_{2} \ / S

H C - C H ∥ ∥ H C C H \ / S

H C - C H_{2} ∥ ∥ H C C H_{2} \ / S

H_{2} C - C H ∥ ∥ H_{2} C C \ / N

ANS : 3

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