CC#CCN1c2ccccc2[C@]23C[C@@H](C(=O)OC)N(C(=O)C4CCC4)C2=NC(C(=O)OC)=C(C(=O)OC)[C@H]13
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?