[{"from": "human", "value": "Write the gravimetric heat capacity at 300 K of given MOF with MOF structural features and topology and composition. ->  MOF structural features and topology: linker [O-]C(=O)CC(C(=O)[O-])N, n1cc(cc(c1)c1ccncc1)c1ccncc1, nodes [Ni], topology \n composition: Ni2 H21 C23 N5 O8\n"}, {"from": "gpt", "value": " 0.890669452\n"}]