InChI=1S/C21H23N3O4/c1-11(2)10-15-17-16(12-6-3-4-7-13(12)22-17)18(25)21(28)20(27)23-9-5-8-14(23)19(26)24(15)21/h3-4,6-7,10,14-15,18,22,25,28H,5,8-9H2,1-2H3/t14-,15-,18-,21+/m0/s1