RESIDUE 1G4 43 CONECT OB 1 CB CONECT CB 3 OB CAB NA CONECT CAB 4 CB CBB NB H1 CONECT CBB 4 CAB CGB H2 H3 CONECT CGB 3 CBB CD4 CD3 CONECT CD4 3 CGB CE4 H4 CONECT CE4 3 CD4 CZB H5 CONECT CZB 3 CE4 OHB CE3 CONECT OHB 2 CZB H6 CONECT CE3 3 CZB CD3 H7 CONECT CD3 3 CGB CE3 H8 CONECT NB 3 CAB CA H9 CONECT CA 4 NB CAA H11 H12 CONECT CAA 4 CA NA CBA H13 CONECT NA 3 CB CAA H14 CONECT CBA 4 CAA CGA H15 H16 CONECT CGA 3 CBA CD2 CD1 CONECT CD2 3 CGA CE2 H17 CONECT CE2 3 CD2 CZA H18 CONECT CZA 3 CE2 OHA CE1 CONECT OHA 2 CZA H19 CONECT CE1 3 CZA CD1 H20 CONECT CD1 3 CGA CE1 H21 CONECT H1 1 CAB CONECT H2 1 CBB CONECT H3 1 CBB CONECT H4 1 CD4 CONECT H5 1 CE4 CONECT H6 1 OHB CONECT H7 1 CE3 CONECT H8 1 CD3 CONECT H9 1 NB CONECT H11 1 CA CONECT H12 1 CA CONECT H13 1 CAA CONECT H14 1 NA CONECT H15 1 CBA CONECT H16 1 CBA CONECT H17 1 CD2 CONECT H18 1 CE2 CONECT H19 1 OHA CONECT H20 1 CE1 CONECT H21 1 CD1 END HET 1G4 43 HETNAM 1G4 (3S,6S)-3,6-bis(4-hydroxybenzyl)piperazin-2-one FORMUL 1G4 C18 H20 N2 O3