RESIDUE 53Z 40 CONECT CAJ 4 CAH NAT H1 H2 CONECT CAH 4 CAJ CAI H3 H4 CONECT CAI 4 CAH CAK H5 H6 CONECT CAK 4 CAI NAT H7 H8 CONECT NAT 3 CAJ CAK C CONECT C 3 NAT O CA CONECT O 1 C CONECT CA 4 C N H9 H10 CONECT N 3 CA CAP H11 CONECT CAP 3 N OAB NAO CONECT OAB 1 CAP CONECT NAO 3 CAP CAM H12 CONECT CAM 4 NAO CAS H13 H14 CONECT CAS 3 CAM CAF CAG CONECT CAF 3 CAS CAD H15 CONECT CAD 3 CAF CAR H16 CONECT CAR 3 CAD NAA CAE CONECT NAA 3 CAR H17 H18 CONECT CAE 3 CAR CAG H19 CONECT CAG 3 CAS CAE H20 CONECT H1 1 CAJ CONECT H2 1 CAJ CONECT H3 1 CAH CONECT H4 1 CAH CONECT H5 1 CAI CONECT H6 1 CAI CONECT H7 1 CAK CONECT H8 1 CAK CONECT H9 1 CA CONECT H10 1 CA CONECT H11 1 N CONECT H12 1 NAO CONECT H13 1 CAM CONECT H14 1 CAM CONECT H15 1 CAF CONECT H16 1 CAD CONECT H17 1 NAA CONECT H18 1 NAA CONECT H19 1 CAE CONECT H20 1 CAG END HET 53Z 40 HETNAM 53Z 1-(4-aminobenzyl)-3-[2-oxo-2-(pyrrolidin-1-yl)ethyl]ure HETNAM 2 53Z a FORMUL 53Z C14 H20 N4 O2