RESIDUE 3QD 12 CONECT C12 4 C13 H1 H2 H3 CONECT C13 4 C12 B1 H4 H5 CONECT B1 3 C13 O2 O1 CONECT O2 2 B1 H7 CONECT H1 1 C12 CONECT H2 1 C12 CONECT H3 1 C12 CONECT H4 1 C13 CONECT H5 1 C13 CONECT H7 1 O2 CONECT O1 2 B1 H6 CONECT H6 1 O1 END HET 3QD 12 HETNAM 3QD ethylboronic acid FORMUL 3QD C2 H7 B1 O2