COc1cc2c(cc1OCCCC(=O)Nc1cc(C(=O)Nc3cc(C(=O)Nc4cc(C(=O)NCCCN(C)C)n(C)c4)n(C)c3)n(C)c1)N=C[C@@H]1CCCN1C2=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?