RESIDUE 18T 61 CONECT C2 4 C3 O2 C1 H1 CONECT C3 4 C2 O3 C4 H2 CONECT C5 4 C6 C4 O5 H3 CONECT C6 4 C5 H4 H5 H6 CONECT O1 2 P2 C1 CONECT O2 2 C2 H7 CONECT O41 1 C41 CONECT C41 3 O41 C51 N31 CONECT C51 3 C41 C5A C61 CONECT C5A 4 C51 H8 H9 H10 CONECT C61 3 C51 N11 H11 CONECT N31 3 C41 C21 H12 CONECT C21 3 N31 O21 N11 CONECT O21 1 C21 CONECT N11 3 C61 C21 C1, CONECT C1, 4 N11 O4, C2, H13 CONECT O4, 2 C1, C4, CONECT C2, 4 C1, C3, H14 H15 CONECT C3, 4 C2, O3, C4, H16 CONECT O3, 2 C3, H17 CONECT C4, 4 O4, C3, C5, H18 CONECT C5, 4 C4, O5, H19 H20 CONECT O5, 2 C5, P CONECT P 4 O5, O1P O2P OPP CONECT O1P 2 P H21 CONECT O2P 1 P CONECT OPP 2 P P2 CONECT P2 4 O1 OPP O3P O4P CONECT O3P 2 P2 H22 CONECT O4P 1 P2 CONECT C1 4 C2 O1 O5 H23 CONECT O3 2 C3 H24 CONECT C4 4 C3 C5 O4 H25 CONECT O4 2 C4 H26 CONECT O5 2 C5 C1 CONECT H1 1 C2 CONECT H2 1 C3 CONECT H3 1 C5 CONECT H4 1 C6 CONECT H5 1 C6 CONECT H6 1 C6 CONECT H7 1 O2 CONECT H8 1 C5A CONECT H9 1 C5A CONECT H10 1 C5A CONECT H11 1 C61 CONECT H12 1 N31 CONECT H13 1 C1, CONECT H14 1 C2, CONECT H15 1 C2, CONECT H16 1 C3, CONECT H17 1 O3, CONECT H18 1 C4, CONECT H19 1 C5, CONECT H20 1 C5, CONECT H21 1 O1P CONECT H22 1 O3P CONECT H23 1 C1 CONECT H24 1 O3 CONECT H25 1 C4 CONECT H26 1 O4 END HET 18T 61 HETSYN 18T dTDP-6-deoxy-d-allose HETNAM 18T [(2R,3S,5R)-3-hydroxy-5-(5-methyl-2,4-dioxo-3,4-dihydro HETNAM 2 18T pyrimidin-1(2H)-yl)tetrahydrofuran-2-yl]methyl (2R,3R,4 HETNAM 3 18T S,5S,6R)-3,4,5-trihydroxy-6-methyltetrahydro-2H-pyran-2 HETNAM 4 18T -yl dihydrogen diphosphate FORMUL 18T C16 H26 N2 O15 P2