ChemInform Abstract: Water‐Soluble Third Generation Antitumor Platinum Complexes, (2,2‐Bis‐(aminomethyl)‐1,3‐propanediol‐N,N′)(1,1‐cyclobutanedicarboxylato(2‐)‐O,O′)platinum(II) and (1,1‐Cyclobutanedicarboxylato(2‐)‐O,O′)(tetrahydro‐4H‐pyran‐4,4‐dimethanamine‐N,N′)platinum(II).