Selected bond lengths (Å), bond and torsion angles (°) for the title compound.

Parameters	X-ray analysis
The bond lengths (Å)
S1–C1	1.6632 (17)
O1–C2	1.2217 (19)
N1–C1	1.3919 (19)
N1–C2	1.376 (2)
N2–C1	1.376 (2), 1.4085 (18), 1.3229 (17)
N2–C9	1.388 (2), 1.3601 (18)
N3–C15	1.3710 (18)
N3–C21
N4–C15
N4–C16
The bond angles (°)
O1–C2–N1	122.12 (14)
O1–C2–C3	121.74 (15)
N1–C2–C3	116.14 (14)
N1–C1–S1	118.26 (12)
N2–C1–S1	127.94 (12)
N1–C1–N2	113.79 (14)
C2–N1–C1	129.09 (14)
C15–N3–C21	104.97 (12)
C15–N4–C16	107.46 (12)
N2–C9–C10	126.12 (13)
N2–C9–C14	114.97 (13)
N3–C15–N4	112.49 (12)
C12–C15–N3	124.71 (13)
C12–C15–N4	122.79 (12)
The torsion angles (°)
C4–C3–C2–N1	17.0 (2)
C4–C3–C2–O1	−163.18 (17)
C8–C3–C2–N1	−163.93 (16)
C8–C3–C2–O1	15.9 (2)
C2–N1–C1–N2	3.9 (2)
S1–C1–N1–C2	−175.18 (14)
S1–C1–N2–C9	0.4 (3)
C1–N2–C9–C10	−11.8 (3)
C1–N2–C9–C14	170.60 (17)
C11–C12–C15–N4	−7.0 (2)
C13–C12–C15–N3	−7.8 (2)
C13–C12–C15–N4	173.16 (15)