RESIDUE P6S 19 CONECT C21 4 C22 O20 H7 H8 CONECT C22 3 C21 C23 C27 CONECT C24 3 C23 C25 H9 CONECT C26 3 C25 C27 H10 CONECT C19 3 O20 O28 OXT CONECT C23 3 C22 C24 H20 CONECT C25 3 C24 C26 H21 CONECT C27 3 C22 C26 H22 CONECT O20 2 C21 C19 CONECT O28 1 C19 CONECT H7 1 C21 CONECT H8 1 C21 CONECT H9 1 C24 CONECT H10 1 C26 CONECT H20 1 C23 CONECT H21 1 C25 CONECT H22 1 C27 CONECT OXT 2 C19 HXT CONECT HXT 1 OXT END HET P6S 19 HETNAM P6S benzyl hydrogen carbonate FORMUL P6S C8 H8 O3