InChI=1S/C19H21N3O2/c1-13(23)18(22-11-17(19(20)24)21-12-22)10-9-15-7-4-6-14-5-2-3-8-16(14)15/h2-8,11-13,18,23H,9-10H2,1H3,(H2,20,24)/t13-,18+/m0/s1