InChI=1/C20H26N4O4S/c1-15-7-9-18(10-8-15)29(27,28)22-12-11-21-19(25)20(26)23-17-6-4-5-16(13-17)14-24(2)3/h4-10,13,22H,11-12,14H2,1-3H3,(H,21,25)(H,23,26)/p+1/fC20H27N4O4S/h21,23-24H/q+1 4ECFC6027A8F7F8B