Using CCOC(=O)C(C)C=O, N=C(N)CCCCn1cnc(NC(N)=NCC(F)(F)F)n1 to produce Cc1cnc(CCCCn2cnc(NC(N)=NCC(F)(F)F)n2)nc1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.