Using CCn1c(=O)c(CC(=O)O)cc2ccc(OCCCNC(=N)N)cc21 to produce CCN1C(=O)C(CC(=O)O)Cc2ccc(OCCCNC(=N)N)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.