CC(C)NC(=O)OCc1c(COC(=O)NC(C)C)c(-c2ccc[n+](COC(=O)C3CC3)c2)n2c1CCC2.[I-]
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. Amide C-N bonds are not counted because of their high barrier to rotation.  How many rotatable bonds does the molecule have?