InChI=1S/C22H32O4/c1-2-3-10-15-20(23)16-11-7-5-4-6-8-12-17-21(24)18-13-9-14-19-22(25)26/h3,5-8,10-13,16-18,20-21,23-24H,2,4,9,14-15,19H2,1H3,(H,25,26)/b7-5?,8-6?,10-3?,16-11?,17-12+,18-13?/t20-,21+/m0/s1