COC(=O)C1Cc2c([nH]c3ccccc23)-c2[nH]c3ccccc3c2CC(NC(C)=O)C(=O)N2CCCC2C(=O)N1
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?