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H x c. Ch4 1500 x1 c2h2. Ch4 1500 x1 c2h6 cl2 x2. Ch4 - +cl2 x1 +cl2 x2. Ch4-x1 - x2- пара-нитротолуол - x3 -.
Ch4 1500 x1 c2h2. Ch4 1500 x1 c2h6 cl2 x2. Ch4 - +cl2 x1 +cl2 x2. Ch4-x1 - x2- пара-нитротолуол - x3 -.

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