steroid conanine InChI=1S/C22H37N/c1-15-18-9-10-20-17-8-7-16-6-4-5-12-21(16,2)19(17)11-13-22(18,20)14-23(15)3/h15-20H,4-14H2,1-3H3/t15-,16?,17+,18+,19-,20-,21-,22-/m0/s1 chebi_ontology ICKQFGPZAUSMPE-PFKVMXGZSA-N 315.53592 [H][C@]12CC[C@@]3([H])[C@]4([H])CCC5CCCC[C@]5(C)[C@@]4([H])CC[C@]13CN(C)[C@H]2C conanine 0 315.29260 CHEBI:35655 C22H37N steroid alkaloid fundamental parent