2- or 3- substituted Carboxylate > RH + CO2

[#6:6]-[#6;R0;!$(C(N)(CCC(=O)NC(CS)C(=O)NCC([O-])=O)C([O-])=O):1](-[#7,#8:5])-[#6](-[#8-])=O>>[#6:6]-[#6;R0:1]-[#7,#8:5]

[#6:6]-[#6;R0;!$(C(N)(CCC(=O)NC(CS)C(=O)NCC([O-])=O)C([O-])=O):1](-[#7,#8:5])-[#6](-[#8-])=O

[$([#1A]C([#6])(O)C([#8-])=O)]

[#6:6]-[#6;R0:1]-[#7,#8:5]

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