Using Nc1nc(-n2cc(C(=O)O)c(=O)c3c(N)c(F)c(F)c(Cl)c32)c(F)cc1F, CO to produce COc1c(F)c(N)c2c(=O)c(C(=O)O)cn(-c3nc(N)c(F)cc3F)c2c1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.