英文名称
1-Amino-3-[2-[2-(2,5-dioxopyrrol-1-yl)ethyl-[2-[(hydrazinecarbonylamino)carbamoylamino]ethyl]amino]ethylcarbamoylamino]urea;1-[2-[2-(2,5-dioxopyrrol-1-yl)ethyl-[2-[[(methylideneamino)carbamoylamino]carbamoylamino]ethyl]amino]ethyl]-3-[(methylideneamino)carbamoylamino]urea