COC(=O)[C@H](Cc1c[nH]c2ccccc12)NP(=O)(O)OCC1C=CC(n2cc(C)c(=O)[nH]c2=O)O1.N
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?