[{"from": "human", "value": "What is the gravimetric heat capacity at 300 K for MOF with MOF structural features and topology and composition? ->  MOF structural features and topology: linker [O-]C(=O)c1cc(C(=O)[O-])c(cc1C(=O)[O-])C(=O)[O-], nodes [Ni][OH2][Ni][OH2][Ni], topology scu,pcu\n composition: Ni3 H8 C20 O18\n"}, {"from": "gpt", "value": " 0.783790469\n"}]