Ring H12

Ring H14

Ring H15

Ring H16

Ring H18

Ring H19

Ring TR4

Ring TR5b

Anello H1Nb

Rng H2

Ring X49N

Rng XLN39b

Ring F1b

Ring F2b

Ring T1

Ring T2

Ring T3

Ring H11b

Ring H5b

Ring H6b

Ring H7b

Ring H8b

Ring H9b

Ring H10b

Ring C2

Ring C6pv

Ring D5b

Ring D1b

Ring D2b

Ring D3b

Rings TR1-TR2-TR3