CC(=O)OC1CC[C@]2(C#N)[C@H]3CC[C@]4(C)[C@H](C5C=CC(=O)O5)CCC4(O)C3CCC2(O)C1
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. How many bonds in the molecule are rotatable?