CCOC(=O)c1ccc(OCC2c3cc(OC)c(OC)cc3CCN2C(=O)Cc2ccc(OC)c(OC)c2)cc1
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?