Carbamyl &rarr; Amine + Carbonate<br>Carbamate &rarr; Amine<br><br>Comments:<br>This rule is based on <a href="http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=10405795">De Schrijver and De Mot, 1999</a> and <a href="http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=428664">Balba et al., 1979</a>.