Using COc1c(CCCCCc2c[nH]nn2)ccn(-c2ccc(C)cc2)c1=S to produce Cc1ccc(-n2ccc(CCCCCc3c[nH]nn3)c(O)c2=S)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.