Cc1nc(/N=N\c2ccc(S(=O)(=O)O)cc2S(=O)(=O)O)c(COP(=O)(O)O)c(C=O)c1O
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?