问答题

环磷酰胺结构式是
A. B. C. D. E.

A.B../IMAGES/ONERRORIMG.JPG'
C.D../IMAGES/ONERRORIMG.JPG'
E.F../IMAGES/ONERRORIMG.JPG'
G.H../IMAGES/ONERRORIMG.JPG'
I.J../IMAGES/ONERRORIMG.JPG'
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