Using O=C(Nc1cnc(-c2ccccc2)cn1)Oc1ccccc1, CCc1ccc2c(c1)C1(CCNCC1)OC2=O to produce CCc1ccc2c(c1)C1(CCN(C(=O)Nc3cnc(-c4ccccc4)cn3)CC1)OC2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.