| nickel(3+) 5-(2-amino-2-oxoethyl)-4,17,22-tris(2-carboxyethyl)-18,29-bis(carboxymethyl)-5,23-dimethyl-14,25-dioxo-9,26,27,28,30-pentaazaheptacyclo[19.5.1.1<sup>3,6</sup>.1<sup>8,11</sup>.1<sup>16,19</sup>.0<sup>1,23</sup>.0<sup>10,15</sup>]triaconta-6(30) |
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