User: I have a question about the chemical with SMILES COc1ccc2c(O[C@@H]3C[C@H]4C(=O)N[C@]5(P(=O)(O)Cc6c(F)cccc6F)C[C@H]5CCCCCCC[C@H](NC(=O)OC5CCCC5)C(=O)N4C3)cc(-c3csc(NC(C)C)n3)nc2c1Cl.
Assistant: That sounds interesting, how can I help?
User: What is the molecular weight of this compound's parent molecule?
Assistant: The answer is 957.48
User: I have a question about the {#molecule|chemical|compound!} with {SMILES__description} {SMILES#}.
Assistant: {#Sure, what is your question?|How can I help?|That sounds interesting, how can I help?|Interesting, how can I help?!}
User: {quest#}
Assistant: {#The answer is |!}{answ#}
COc1ccc2c(O[C@@H]3C[C@H]4C(=O)N[C@]5(P(=O)(O)Cc6c(F)cccc6F)C[C@H]5CCCCCCC[C@H](NC(=O)OC5CCCC5)C(=O)N4C3)cc(-c3csc(NC(C)C)n3)nc2c1Cl
COc1ccc2c(O[C@@H]3C[C@H]4C(=O)N[C@]5(P(=O)(O)Cc6c(F)cccc6F)C[C@H]5CCCCCCC[C@H](NC(=O)OC5CCCC5)C(=O)N4C3)cc(-c3csc(NC(C)C)n3)nc2c1Cl
[(1S,4S,6R,14S,18R)-18-[8-chloro-7-methoxy-2-[2-(propan-2-ylamino)-1,3-thiazol-4-yl]quinolin-4-yl]oxy-14-(cyclopentyloxycarbonylamino)-2,15-dioxo-3,16-diazatricyclo[14.3.0.04,6]nonadecan-4-yl]-[(2,6-difluorophenyl)methyl]phosphinicacid
What is the molecular weight of this compound's parent molecule?