Nitroguanidine derivative > Urea derivative

[#7:9]-[#6:1](=[#7:7])-[#7]([H])-[#7+](-[#8-])=O>>[H][#7:7]-[#6:1](-[#7:9])=O

[#7:9]-[#6:1](=[#7:7])-[#7]([H])-[#7+](-[#8-])=O

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[H][#7:7]-[#6:1](-[#7:9])=O

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