CCC(C)N(C(=O)COC(=O)C1C(C(=O)OC)=C(C)N=C(C)/C1=C(/O)OC)C1CCS(=O)(=O)C1
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?