[(carbamoylamino)-(4-methoxyphenyl)methyl]urea

ethyl (E)-3-(carbamoylamino)-2-cyanoprop-2-enoate

1-(4-bromophenyl)-1,7,9-triazaspiro[4.5]decane-2,6,8,10-tetrone

N,N'-羰基二(乙酰胺)

氨基甲酸戊酯