CCN(CC)C(=O)CSc1nc2cc3c(cc2c(=O)n1CCCC(=O)NCc1ccc2c(c1)OCO2)OCO3
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?