Using Cc1n[nH]c2cc(Nc3nc4cccc(Cn5ccccc5=O)n4n3)ccc12, OCCO to produce Cc1n[nH]c2cc(Nc3nc4cccc(Cc5ccnc(O)c5)n4n3)ccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.