[H] [C@@] 12 CC (= C) [C@] ([H]) (CC (C@@) 3 ([H]) C [C@@H] (C) C (= C) [C@@] ([H]) 4 (C [C@] ([H]) O (C@H) (C [C@H] (O) CN) [C@H] (OC) (C@@) 4 ([H]) CC (= O) C (C@@) 4 ([H]) CC (C@) 5 ([H]) O (C@@) 6 ([H]) [C@H] 7 O (C@@) 8 (C (C@) 7 ([H]) O (C@@) 6 ([H]) [C@@] ([H]) (O8) (C@@) 5 ([H]) O4) CC1) O3) O2