Using O=C1CCOCC1, CCc1nc2c(C)cc(C)nc2n1Cc1ccc(NCC2CCNCC2)cc1 to produce CCc1nc2c(C)cc(C)nc2n1Cc1ccc(NCC2CCN(C3CCOCC3)CC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.