RESIDUE 5SI 52 CONECT N1 3 C2 C6 C1' CONECT C2 3 N1 C3 H2 CONECT C3 3 C2 C4 H3 CONECT C4 3 C3 C5 C37 CONECT C5 3 C4 C6 C40 CONECT C6 3 N1 C5 S36 CONECT PA 4 O1A O2A O3A O5' CONECT PB 4 O1B O2B O3A O3B CONECT PG 4 O1G O2G O3B O3G CONECT C1' 4 N1 C2' O4' H1' CONECT O1A 2 PA HO1A CONECT O1B 2 PB HO1B CONECT O1G 2 PG HO1G CONECT C2' 4 C1' C3' H2' H2'A CONECT O2A 1 PA CONECT O2B 1 PB CONECT O2G 1 PG CONECT C3' 4 C2' O3' C4' H3' CONECT O3' 2 C3' HO3' CONECT S36 1 C6 CONECT C37 3 C4 C38 H37 CONECT C38 3 C37 C39 C41 CONECT C39 3 C38 C40 H39 CONECT O3A 2 PA PB CONECT O3B 2 PB PG CONECT O3G 2 PG HO3G CONECT C4' 4 C3' O4' C5' H4' CONECT O4' 2 C1' C4' CONECT C40 3 C5 C39 H40 CONECT C41 4 C38 H41 H41A H41B CONECT C5' 4 C4' O5' H5' H5'A CONECT O5' 2 PA C5' CONECT H2 1 C2 CONECT H3 1 C3 CONECT H1' 1 C1' CONECT HO1A 1 O1A CONECT HO1B 1 O1B CONECT HO1G 1 O1G CONECT H2' 1 C2' CONECT H2'A 1 C2' CONECT H3' 1 C3' CONECT HO3' 1 O3' CONECT H37 1 C37 CONECT H39 1 C39 CONECT HO3G 1 O3G CONECT H4' 1 C4' CONECT H40 1 C40 CONECT H41 1 C41 CONECT H41A 1 C41 CONECT H41B 1 C41 CONECT H5' 1 C5' CONECT H5'A 1 C5' END HET 5SI 52 HETNAM 5SI 2-{2-deoxy-5-O-[(R)-hydroxy{[(R)-hydroxy(phosphonooxy)p HETNAM 2 5SI hosphoryl]oxy}phosphoryl]-beta-D-erythro-pentofuranosyl HETNAM 3 5SI }-6-methylisoquinoline-1(2H)-thione FORMUL 5SI C15 H20 N1 O12 P3 S1