is the small molecule drug space close to 10^60

No, the small molecule drug space is not close to 10^60. The small molecule drug space refers to the number of potential small molecule compounds that could be developed as drugs. While the exact number is difficult to determine, it is estimated to be in the range of 10^60 to 10^80. However, it is important to note that the actual number of small molecule drugs that have been developed and approved for use is significantly smaller, in the range of tens of thousands.