C[C@]12CCC3[C@@H](CCC4C[C@@H](OC(=O)Cc5ccc(N(CCCl)CCCl)cc5)CC[C@@]43C)C1CCC(=O)N2
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?