RESIDUE 4PO 28 CONECT C1 4 C4 H1 H1A H1B CONECT N1 3 O1 C4 C5 CONECT O1 1 N1 CONECT C2 4 C4 H2 H2A H2B CONECT N2 3 O2 C8 C9 CONECT O2 1 N2 CONECT C3 4 C4 H3 H3A H3B CONECT C4 4 C1 N1 C2 C3 CONECT C5 3 N1 C6 H5 CONECT C6 3 C5 C7 C10 CONECT C7 3 C6 C8 H7 CONECT C8 3 N2 C7 H8 CONECT C9 3 N2 C10 H9 CONECT C10 3 C6 C9 H10 CONECT H1 1 C1 CONECT H1A 1 C1 CONECT H1B 1 C1 CONECT H2 1 C2 CONECT H2A 1 C2 CONECT H2B 1 C2 CONECT H3 1 C3 CONECT H3A 1 C3 CONECT H3B 1 C3 CONECT H5 1 C5 CONECT H7 1 C7 CONECT H8 1 C8 CONECT H9 1 C9 CONECT H10 1 C10 END HET 4PO 28 HETSYN 4PO 4-POBN HETNAM 4PO alpha-(4-pyridyl-1-oxide)-N-tert-butylnitrone FORMUL 4PO C10 H14 N2 O2