title: Ethyl 2-[4,5-bis-(butyl-sulfan-yl)-1,3-dithiol-2-yl-idene]-1,3-dithiolo[4,5-c]pyrrole-4-carboxyl-ate.
abstract: In the title mol-ecule, C(19)H(25)NO(2)S(6), the butyl chains are each disordered over two conformations in a 0.689 (10):0.311 (10) ratio. In the crystal, pairs of N-H⋯O hydrogen bonds link mol-ecules into centrosymmetric dimers. Short S⋯S contacts of 3.553 (4) Å are observed.
authors.affiliation: School of Chemistry and Life Science, Changchun University of Technology, Changchun 130012,  People's Republic of China.
authors.forename: Dong-Feng
authors.initials: DF
authors.lastname: Li
authors.forename: Xiao-Fei
authors.initials: XF
authors.lastname: Zhu
authors.forename: Shuang
authors.initials: S
authors.lastname: Guan
authors.forename: Rui-Bin
authors.initials: RB
authors.lastname: Hou