CCOC(=O)c1sc(N2N=C(C)/C(=C\c3ccc(OCC(=O)OC)cc3)C2=O)nc1C
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?