RESIDUE 37T 21 CONECT O6 1 C6 CONECT C6 3 O6 N1 C5 CONECT N1 3 C6 C2 HN1 CONECT C5 3 C6 N7 C4 CONECT N7 3 C5 C13 C8 CONECT C13 4 N7 H131 H132 H133 CONECT C8 3 N7 N9 H8 CONECT N9 2 C8 C4 CONECT C4 3 C5 N9 N3 CONECT N3 3 C4 C12 C2 CONECT C12 4 N3 H121 H122 H123 CONECT C2 3 N1 N3 O2 CONECT O2 1 C2 CONECT HN1 1 N1 CONECT H131 1 C13 CONECT H132 1 C13 CONECT H133 1 C13 CONECT H8 1 C8 CONECT H121 1 C12 CONECT H122 1 C12 CONECT H123 1 C12 END HET 37T 21 HETSYN 37T 3,7-DIMETHYLXANTHINE, 3,7-DIMETHYLPURINE-2,6-DIONE HETNAM 37T THEOBROMINE FORMUL 37T C7 H8 N4 O2