Using Cc1cnc(F)c(-c2cc3c(cn2)cnn3-c2cncc(N3CCCN(C(=O)OC(C)(C)C)CC3)n2)c1, CO to produce Cc1cnc(O)c(-c2cc3c(cn2)cnn3-c2cncc(N3CCCNCC3)n2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.