COc1ccc(NC(=O)Nc2cc(C(=O)O)ccc2N2CC3CC(C2)c2cccc(=O)n2C3)c(OC)c1
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. Amide C-N bonds are not counted because of their high barrier to rotation.  How many rotatable bonds does the molecule have?