Using CC(C)S(=O)(=O)n1c(N)nc2ccc(-c3c(-c4ccccc4)ncn3C3CCC(=O)CC3)cc21, CO to produce CC(C)S(=O)(=O)n1c(N)nc2ccc(-c3cnc(-c4ccccc4)n3C3CCC(O)CC3)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.