Cc1cccc(-c2ccc3[nH]c4c(c3c2)CCN2C[C@@H]([C@H](C)O)[C@@H](N(C)C(=O)NC3CCCCC3)C[C@@H]42)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?