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1,8一二氮杂双环5.4.0十一一7一烯
polym. 1,8-diazabicyclo 5.4.0 undec-7-ene
1,8一二氮杂双环 5.4.0十一一7一烯
polym. 1,8-diazabicyclo 5.4.0 undec-7-ene