CCOc1ccc(/N=N/c2ccc(-c3ccc(/N=N/c4c(O)ccc5cc(S(=O)(=O)O)cc(S(=O)(=O)O)c45)cc3)cc2)cc1
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?