[{"from": "human", "value": "What can you tell me about this molecule? [C][C][C][N][C][=Branch1][C][=O][C][Branch2][Branch1][Ring2][N][C][=Branch1][C][=O][C][=C][C][C][Branch2][Ring1][Branch1][O][C][=Branch1][C][=O][C][Branch1][#Branch1][O][C][Ring2][Ring1][Ring1][=O][C][C][Branch1][C][C][C][C][Branch1][C][C][C][C][Branch1][Ring2][O][Ring1][Ring1][C][=C][C][=C][C][=C][Ring1][=Branch1][C][C][=C][C][=Branch1][#Branch2][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][C][Cl]"}, {"from": "gpt", "value": "The molecule is the cryptophycins are a family of 16-membered macrolide antimitotic agents isolated from the cyanobacteria Nostoc sp. The mechanism of anticancer activity of the cryptophycins has been associated with their destabilization of microtubules and induction of bcl-2 phosphorylation leading to apoptosis. Cryptophycins demonstrated activity against the wide spectrum of solid tumors including those that overexpress the multidrug resistance efflux pump P-glycoprotein. (NCI)"}]