[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][N][Branch1][Branch2][C][=N][N][=C][S][Ring1][Branch1][P][=Branch1][C][=O][Branch1][=Branch1][N][C][C][Ring1][Ring1][N][C][C][Ring1][Ring1]"}, {"from": "gpt", "value": "The molecule is an azirine-based thiotepa derivative with alkylating activity. Azetepa is able to alkylate and crosslink DNA, causing DNA damages and eventually an inhibition of cellular proliferation."}]