RESIDUE ALG 19 CONECT C 2 CA O CONECT O 1 C CONECT CA 4 C CB 1HA 2HA CONECT CB 4 CA CD 1HB 2HB CONECT CD 4 CB NE 1HD 2HD CONECT NE 3 CD CZ HNE CONECT CZ 3 NE NH1 NH2 CONECT NH1 2 CZ HH1 CONECT NH2 3 CZ 1HH2 2HH2 CONECT 1HA 1 CA CONECT 2HA 1 CA CONECT 1HB 1 CB CONECT 2HB 1 CB CONECT 1HD 1 CD CONECT 2HD 1 CD CONECT HNE 1 NE CONECT HH1 1 NH1 CONECT 1HH2 1 NH2 CONECT 2HH2 1 NH2 END HET ALG 19 HETNAM ALG GUANIDINOBUTYRYL GROUP FORMUL ALG C5 H10 N3 O1