RESIDUE 1FK 31 CONECT O 1 C1 CONECT C1 3 O C C2 CONECT C 4 C1 H1 H2 H3 CONECT C2 3 C1 N3 C3 CONECT N3 3 C2 C13 C9 CONECT C13 3 N3 C12 H4 CONECT C12 3 C13 C11 H5 CONECT C11 3 C12 N2 C10 CONECT N2 3 C11 H6 H7 CONECT C10 3 C11 C9 H8 CONECT C9 3 N3 C10 C4 CONECT C4 3 C9 C3 C5 CONECT C3 3 C2 C4 H9 CONECT C5 3 C4 N1 N CONECT N1 2 C5 C8 CONECT C8 3 N1 C7 H10 CONECT C7 3 C8 C6 H11 CONECT C6 3 C7 N H12 CONECT N 2 C5 C6 CONECT H1 1 C CONECT H2 1 C CONECT H3 1 C CONECT H4 1 C13 CONECT H5 1 C12 CONECT H6 1 N2 CONECT H7 1 N2 CONECT H8 1 C10 CONECT H9 1 C3 CONECT H10 1 C8 CONECT H11 1 C7 CONECT H12 1 C6 END HET 1FK 31 HETNAM 1FK 1-[7-amino-1-(pyrimidin-2-yl)indolizin-3-yl]ethanone FORMUL 1FK C14 H12 N4 O1