InChI=1/C20H22O3/c21-14-8-6-13(7-9-14)20-17-5-3-1-2-4-16(17)18-12-15(22)10-11-19(18)23-20/h6-12,16-17,20-22H,1-5H2/t16-,17+,20+/m0/s1 07B734828FBC3D83