COC(=O)C1=C(C)N(Cc2ccccc2)C2=C3C(=O)CCCC3[C@@](O)(C(=O)OC)C(=O)N2C1c1ccccc1
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?