CCCCS(=O)(=O)N1C2=NC(C(=O)OC)=C(C(=O)OC)[C@@H]3Nc4ccccc4[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. How many bonds in the molecule are rotatable?