Using CCO, CCOC(OCC)c1cccc(C2=NC=C3C=CC(=O)NC4=C3N2CC4)c1 to produce O=Cc1ccc(C2=NC=C3C=CC(=O)NC4=C3N2CC4)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.