Using CCOC(=O)CCc1cn(Cc2ccc(OCc3nc(-c4ccccc4)oc3C)cc2)nc1O, CI to produce CCOC(=O)CCc1cn(Cc2ccc(OCc3nc(-c4ccccc4)oc3C)cc2)nc1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.