CCOC(=O)N1CCc2c(sc3c2C(O)=NC(c2ccc(N(C)C)cc2)N3)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?