Using OCCO, Oc1[nH]nc(-c2ccccn2)c1-c1ccnc2ccccc12 to produce c1ccc(-c2nn3c(c2-c2ccnc4ccccc24)OCC3)nc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.