COc1ccc(NC(=O)c2cccc(N3C(=O)c4ccc(C(=O)Nc5ccc(OC)c(O)c5)cc4C3=O)c2)cc1O
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?