[{"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, nodes [Zn], topology pcu\n composition: Zn4 H12 C12 O24\n"}, {"from": "gpt", "value": " 0.645931211\n"}]