5-6-8-4- 5-6-8-4- [5a]-6-8-4- [5d]-6-[8a]-4- [3a] d [5a]-6-[4p] s [3o]-5-6-[4o]- [3o]-5-[6a]-4- [5d]-6-[8o]-[4d]- [5a]-6-[8a] d [4a]- [5a]--[7d]-- [6a]--[7a] d a- [5a]--[7f]-- [6a]---- [5i]-[6o]-[8a] p [4i]- [5i]-[6o]-[8a]-4- [5i]-[6o]-[8a] p [4i]- [5d]-6-[8a]-4- [3a] d [5a]-6-[4p] s [3o]-[5u]-6-[4o]- [3o]-[5u]-6-4- [5d]-[6a]-[8o]-[4d]- [5a]-6-[8a] d [4a]- [5a] - 7 [7d]-- [6a]--[7a] [9d] [7a]- [5a] - 7 [7f]-- [6a]---a- [5a]--[7h]-- [6d]---[7a] d a