A　new　porous　metal-organic　framework　(MOF)　with　three　types　of　preserved　polyhedral　molecular　building　units,　all　of　which　have　been　observed　in　a　series　of　isostructural　MOFs　constructed　from　highly　symmetrical　hexacarboxylic　ligands,　was　formed　even　from　a　pre-designed　related　tetracarboxylic　ligand　with　drastically　reduced　symmetry.