RESIDUE 4SV 16 CONECT O2 1 C6 CONECT C6 3 O2 O1 C5 CONECT O1 2 C6 H1 CONECT C5 3 C6 C1 C4 CONECT C1 3 C5 N1 C2 CONECT N1 3 C1 H11N H12N CONECT C4 3 C5 C3 H4 CONECT C3 3 C4 N2 H3 CONECT N2 2 C3 C2 CONECT C2 3 C1 N2 H2 CONECT H1 1 O1 CONECT H4 1 C4 CONECT H11N 1 N1 CONECT H12N 1 N1 CONECT H2 1 C2 CONECT H3 1 C3 END HET 4SV 16 HETNAM 4SV 3-AMINOPYRIDINE-4-CARBOXYLIC ACID FORMUL 4SV C6 H6 N2 O2