InChI=1S/C25H31NO4/c1-17(7-5-8-18(2)11-13-23-25(3,4)30-23)10-12-20-21(27)15-22(29-24(20)28)19-9-6-14-26-16-19/h6,8-10,14-16,23,27H,5,7,11-13H2,1-4H3/p-1/b17-10+,18-8+/t23-/m0/s1