InChI=1/C20H15N3O3S/c21-12-14-1-3-15(4-2-14)20(24)11-19(16-9-10-27-13-16)22-17-5-7-18(8-6-17)23(25)26/h1-10,13,19,22H,11H2/t19-/m1/s1 751B1BA1940CB539