Using O=C(O)Cc1ccc(-n2cnnn2)c(F)c1, O=C1OCc2cc(CCN3CCNCC3)ccc21 to produce O=C1OCc2cc(CCN3CCN(C(=O)Cc4ccc(-n5cnnn5)c(F)c4)CC3)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.