COc1ccccc1CCNC(=O)C(=O)NCC1OCCN1S(=O)(=O)c1ccc2c(c1)OCCO2
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?