COc1cccc(CSc2nc3n(n2)C(c2cccnc2)C(C(=O)Nc2ccccc2C)=C(C)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?