COC(=O)c1[nH]c2cc(OC)c(OC)cc2c1NC(=O)CN1C[C@@H]2C[C@H](C1)Cn1c2cccc1=O
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?