[{"from": "human", "value": "Write Mw of given SMILES at room temperature and atmospheric pressure. ->  CC1=CC2=C(C(OC[C@@H](CCCCCCCC)CCCCCC)=C(C=C(C3=CC=C(C4=C(C=C(C(N(CC(CCCC)CC)C5=O)=O)C5=C6)C6=C(C7=CC=C(C)S7)S4)S3)S8)C8=C2OCC(CCCCCC)CCCCCCCC)S1\n"}, {"from": "gpt", "value": " 20.4\n"}]