Cc1cccc(-n2ncc(C(=O)N3CCN(Cc4ccccc4)CC3)c2C2CCN(C(=O)OC(C)(C)C)CC2)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?