This chemical is called Lead(II) maleate, and its IUPAC name is (Z)-but-2-enedioate; lead(2+). With the molecular formula of C₄H₄O₄.Pb, its molecular weight is 321.26. The CAS registry number of this chemical is 17406-54-1.

Other characteristics of the Lead(II) maleate can be summarised as followings: (1)H-Bond Donor: 0; (2)H-Bond Acceptor: 4; (3)Rotatable Bond Count: 0; (4)Exact Mass: 321.971945; (5)MonoIsotopic Mass: 321.971945; (6)Topological Polar Surface Area: 80.3; (7)Heavy Atom Count: 9; (8)Formal Charge: 0; (9)Complexity: 108; (10)Defined Bond StereoCenter Count: 1; (11)Undefined Bond StereoCenter Count: 0; (12)Covalently-Bonded Unit Count: 2.

You can still convert the following datas into molecular structure: 
1.SMILES: C(=C\C(=O)[O-])\C(=O)[O-].[PbH4+2]
2.InChI: InChI=1/C4H4O4.Pb.4H/c5-3(6)1-2-4(7)8;;;;;/h1-2H,(H,5,6)(H,7,8);;;;;/q;+2;;;;/p-2/b2-1-;;;;;/rC4H4O4.H4Pb/c5-3(6)1-2-4(7)8;/h1-2H,(H,5,6)(H,7,8);1H4/q;+2/p-2/b2-1-;
3.InChIKey: MXORYZQELHIREJ-HPAKPVRCBW