Using O=C1COC1, Cn1cc(-c2cccc(-c3ncc(-c4cnn(C5CCNCC5)c4)cn3)c2)cn1 to produce Cn1cc(-c2cccc(-c3ncc(-c4cnn(C5CCN(C6COC6)CC5)c4)cn3)c2)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.