COc1ccc(N2C(=O)[C@H]3c4[nH]c5ccccc5c4[C@H]4CCC(C)C[C@H]4[C@H]3C2=O)cc1
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?