RESIDUE A1ESL 53 CONECT O30 2 C28 H1 CONECT C28 3 O30 O29 C27 CONECT O29 1 C28 CONECT C27 4 C28 C26 H2 H3 CONECT C26 4 C27 C25 H4 H5 CONECT C25 3 C26 C24 C31 CONECT C24 3 C25 C23 H6 CONECT C23 3 C24 C22 H7 CONECT C31 3 C25 C32 H8 CONECT C32 3 C31 C22 H9 CONECT C22 3 C23 C32 C16 CONECT C16 3 C22 C15 C17 CONECT C15 3 C16 N14 H10 CONECT C17 3 C16 O18 N19 CONECT O18 1 C17 CONECT N19 3 C17 C20 H11 CONECT C20 3 N19 O21 N14 CONECT O21 1 C20 CONECT N14 3 C15 C20 C5 CONECT C5 4 N14 C3 O6 H12 CONECT C3 4 C5 O4 C2 H13 CONECT O4 2 C3 H14 CONECT O6 2 C5 C7 CONECT C7 4 O6 C2 C8 H15 CONECT C2 4 C3 C7 O1 H16 CONECT O1 2 C2 H17 CONECT C8 4 C7 O9 H18 H19 CONECT O9 2 C8 P10 CONECT P10 4 O9 O11 O12 O13 CONECT O11 2 P10 H20 CONECT O12 1 P10 CONECT O13 2 P10 H21 CONECT H1 1 O30 CONECT H2 1 C27 CONECT H3 1 C27 CONECT H4 1 C26 CONECT H5 1 C26 CONECT H6 1 C24 CONECT H7 1 C23 CONECT H8 1 C31 CONECT H9 1 C32 CONECT H10 1 C15 CONECT H11 1 N19 CONECT H12 1 C5 CONECT H13 1 C3 CONECT H14 1 O4 CONECT H15 1 C7 CONECT H16 1 C2 CONECT H17 1 O1 CONECT H18 1 C8 CONECT H19 1 C8 CONECT H20 1 O11 CONECT H21 1 O13 END HET A1ESL 53 HETNAM A1ESL 3-[4-[1-[(2R,3R,4S,5R)-3,4-bis(oxidanyl)-5-(phosphonoox HETNAM 2 A1ESL ymethyl)oxolan-2-yl]-2,4-bis(oxidanylidene)pyrimidin-5- HETNAM 3 A1ESL yl]phenyl]propanoic acid FORMUL A1ESL C18 H21 N2 O11 P