CCCCS(=O)(=O)N1C2=NC(C(=O)OC)=C(C(=O)OC)[C@@H]3N(C)c4ccc(OC)cc4[C@]23C[C@H]1C(=O)OC
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?