Using Cn1c(OC2CCN(c3ccccc3C=O)CC2)nc(-c2ccncn2)cc1=O, C1COCCN1 to produce Cn1c(OC2CCN(c3ccccc3CN3CCOCC3)CC2)nc(-c2ccncn2)cc1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.