CCOC(=O)NC(=O)c1cn(-c2ccc(CCOC(=O)CCCCCCCCC(=O)OCCc3ccc(-n4cc(C(=O)NC(=O)OCC)c(=O)[nH]c4=O)cc3)cc2)c(=O)[nH]c1=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?