O=C(N[C@@H]1C/C=C\C[C@H](CC(=O)N(CCO)Cc2ccccc2)C(=O)NC[C@@H](c2ccccc2)OC1=O)OCC1c2ccccc2-c2ccccc21
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?