InChI=1S/C27H28N2O5/c30-18-25(31)23(16-20-10-4-1-5-11-20)28-26(32)24(17-21-12-6-2-7-13-21)29-27(33)34-19-22-14-8-3-9-15-22/h1-15,23-24,30H,16-19H2,(H,28,32)(H,29,33)/t23-,24-/m0/s1