CC(C)(C)OC(=O)N1Cc2ccccc2C[C@H]1C(=O)NCC(=O)Nc1ccc2c(c1)OCCO2
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?