CC(C)(C)OC(=O)NCCCCC(NC(=O)OCC1c2ccccc2-c2ccccc21)C(=O)N1CCCC1C(=O)NCC(N)=O
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?