π-π stacking is also observed between the furan rings with the centroid-to-centroid distance of 3.723 Å in compound 2. Besides, there exist two kinds of hydrogen bonds (N(13)–H(13B)···Cl(2), N(23)–H(23B)···Cl(2), N(13)–H(13A)···Cl(1), N(23)–H(23A)···N(11)) in this compound, as shown in Table 4.