中文摘要：

protonated 的破碎的学习分子的种类[M+H ]+ 和选择碎片离子为标题混合物的主要破碎小径允许建议。为了更好理解破碎小径， MS3 和 MS4，标题混合物的系列被获得。主要破碎小径由在 N-methylpyrrole 和羰基组， CONH 酰胺契约，在 NH 组之间的 NHC 契约和 N-methylpyrrole 之间的 CCO 契约的劈开发生在 1,4,7,10-tetraazacyclododecane 的戒指，和 NC 契约。Electrospray 电离被证明是为这种混合物的结构的描述和鉴定的一个好方法。

英文摘要：

The study of the fragmentations of the protonated molecular species [M＋H]^＋ and selected fragment ions allowed proposals for the main fragmentation pathways of the title compound. In order to better understand the fragmentation pathways, the MS3 and MS4 spectra of the title compound were obtained. The main fragmentation pathways occur by the cleavage of the C-CO bonds between N-methylpyrrole and carbonyl groups, CO-NH amide bonds, NH-C bonds between the NH groups and the N-methylpyrrole rings, and N-C bonds in 1,4,7,10-tetraazacyclododecane. Electrospray ionization was proven to be a good method for the structural characterization and identification of this kind of compound.