COc1ccc2c(c1)[nH]c1c(N3CCN(Cc4ccc5c(c4)OCO5)CC3)ncnc12
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?