RESIDUE 3OF 7 CONECT FE 2 O1 O2 CONECT O1 3 FE HO11 HO12 CONECT O2 3 FE HO21 HO22 CONECT HO11 1 O1 CONECT HO12 1 O1 CONECT HO21 1 O2 CONECT HO22 1 O2 END HET 3OF 7 HETNAM 3OF HYDRATED FE (III) ION, 2 WATERS COORDINATED FORMUL 3OF Fe1 H4 O2 3+