CC(C)(C)OC(=O)[C@H](Cc1ccccc1)NC(=O)c1[nH]cnc1C(=O)N[C@@H](Cc1ccccc1)C(=O)OCc1ccccc1
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?