[4t]-[6r]-[2e]-6- [4e]-6 r [2t]-6- [5r]-6-[3e]-6- [5r]-[6t]-[3y]-6- [4t] r [6t] y [2t]-6- [4t]-6-[2y]-[6u]- [4i]-5 u [2y]-5- [4e]-5-[2r] t [5y]- 4-6-2-6- [4t]-[6r]-[2e]-6- [4e]-6 r [2t]-6- [5r]-6-[3e]-6- [5r]-[6t]-[3y]-6- [4t] r [6t] y [2t]-6- [4t]-6-[2y]-[6u]- [4i]-5 u [2y]-5- [4e]-5-[2r] t [5y]- 4-6-2-6- [5u]-[7y]-[3t]-7- [5t]-7-[3y]-7- [8y]-9 t [6e]-9- [8t]-9-[6r]-9- [5u]-[7y]-[3t]- [7r]- [:e'e]