hydronium cation

(2R,11aS)-2-(methoxymethoxy)-10-(methoxymethyl)-2,3-dihydro-1H-benzo[e]pyrrolo[1,2-a][1,4]diazepine-5,11(10H,11aH)-dione

4,4'-carbonyl-di-morpholine

2-(N,N-penta-3-oxa-1,5-diyl-carboxamido)-pyridine

carbon monoxide ion